I had my thread about the same subject deleted because I suggested it could have been a fixed fight.
To all of those saying "you've never rolled, blah, blah, blah" well let me tell you this, I've watched thousands of fights and you simply do not tap to a choke with 7 seconds left. The hold is locked in at 7 seconds, the pressure would have only been applied at around 5 seconds left, and he taps with 1 second left. Some even say that you should never tap to a choke, nevermind tap after being in the hold for about 3 seconds. It's also a triangle, which isn't even a choke around your windpipe.
For me, it was awfully suspicious.