During sparring today someone had a relatively loose triangle on me. I was postured so I didn't think much of it. I stood up and he came up with me and I sat back down again with my name in between myself and my sparring partner. I was keeping my arm in braced to stop him pulling it out for an armbar. He was adjusting then suddenly I heard a pop. I lost feeling and strength in that arm and shoulder. I tapped and rubbed my shoulder and it still hurt abit but I had mainly numbness and a kind of weakness. Its hard to describe. I could still use it but it felt somehow detached and weak. I talked to a high school wrestler friend of mine who said he had the same problem at one point and that it just went away by itself and he could still spar at near full capacity which alleviated my concerns a little. He said the damage had been done to the nerve and not the tendons. He referred to it as a stinger or burner. Has anyone else had a similar experience, if so what did you do about it.