I train at Gracie Barra and I train to compete. We follow the IBJJF rules. Heel hooks, neck cranks, spinal locks, and finger locks are always illegal. Kneebars, calf slicers, bicep slicers and toe holds are only legal for brown and black belts. Gracie Barra is a BJJ school, BJJ is a sport, and those are the rules of the sport.
What if I went into a Judo class and started doing leglocks on people? How fast do you think I would get yelled at or even thrown out, especially if I hurt someone? Yes leg lock submissions technically exist in the martial art, but are completely 100% illegal in the sport, so you just don't do them, at least in live sparring.
By the way I found out this guy is not actually a GB student, he mainly trains at an MMA school on the other side of town and drops in at GB occasionally for gi classes.
Thanks, though. I don't think the injury is that serious but that same knee has been bothering me lately. I had already made a doctor appointment to get it checked out on Monday anyway so I guess it's good timing?
I've only been in two tournaments so far...
The rules in the first tournament were as follows.
Gi: Anything goes except heel hooks and neck cranks (can-openers are okay) for anybody at any level (except kids matches). I was at blue belt level and I tried to bicep slice somebody and was not called on it, I also saw a knee-bar and an ankle lock, and nobody was called on it.
No-gi: Anything goes for anybody at any level (except kids matches).
Second tournament-
Gi: Everything goes.
No-gi: Everything goes.
In our gym there are a lot of leg-locks, mostly from this kick-butt guy who is pretty much the leg-lock king and a few guys he has been teaching lots of leg-locks to (myself amongst them). Lately between 50-75% of my submissions are leg-locks of some sort (mostly straight ankle locks, followed by knee-bars, with some toe-holds). I have yet to get a heel hook but that is most likely due to the fact I don't quite understand the setups and I have not drilled/attempted one yet.
I did have a white belt land a heel-hook on me out of nowhere, I tapped immediately and fortunately he didn't torque on it or twist/wrench, he just landed it and waited for me to tap (which I did the second I saw what was going on- as I originally thought he was going for a toe hold or just trying to trap my foot/leg until I was able to sit up a bit and see what the deal was). The worst part was he told me nobody showed him the heel hook, he saw it online and thought it would be neat to try while sparring. Oh well, I shouldn't have been in a position where he could have done it, I should have expected anything, even though he's only a basic few stripe white belt, I shouldn't have under-estimated him.
I've never seen anybody injured from a leg-lock at our gym, except one girl who wound up hurt from what I believe was a knee-bar (might have been an ankle lock), I don't know the particulars but I haven't seen her since I heard she had something popped. Maybe it was an issue of her not tapping, I don't know.
There was another girl at our gym (she's now gone off to college) who developed this habit of refusing to tap when I locked knee-bars in on her, a few times I even asked her "are you going to tap?" as I was about to lightly bridge against her leg, and she said "no" so I just sighed, let her go, got a better position from the scramble that resulted, and choked her for the tap. Afterward she made it clear she won't tap to a knee-bar because she 'doesn't like them' or some such thing.
Everybody in our gym expects leg-locks, I was taught the straight ankle lock when I was a high level white belt, and the knee-bar when I was a no stripe blue belt, although it took me a few months beyond that to start being comfortable going for knee-bars, and a bit longer to be able to get them at a level of proficiency around 40-50% of the time (I have a lot to work on and a lot of room to improve, but I am going for them a lot). As far as I know I have never injured anybody (if I have they are an expert at concealing it and walking away fine).
Folks at our gym know what leg-locks are capable of, they know to expect them, and a number know how to hit them a LOT, and a number know how to hit them here and there.
But from what you described, what happened to you was a lot of BS on the part of that jackass that torqued/wrenched on you. He had no right wrenching on it, especially if you didn't know it was locked in.
The guy who taught me basically 85-95% of what I know about leg-locks, when he catches me in a heel-hook and I don't realize it because I'm not focused on it, he'll just hold it and sometimes chuckle, "don't play" if I try to move one way or another, to get my attention on the heel hook, at which time I tap immediately.
The guy you described doesn't belong at your gym, he probably doesn't belong in any gym.
There have been times where people could have ruined me before I realized what they had locked in on me, and times where I could have wrenched on people because they were resisting tapping or they were trying to do something to get out of it. I'm not out to wreck anybody though, and from what I can tell so far (based on not being wrecked) none of the other folks at the gym are out to wreck their training partners either.