Last night while rolling, a guy had me in Lockdown. I went to twister side control to free my leg. The guy grabbed my other leg and pulled, making me do a front split. I'm flexible so it didn't hurt... And then my knee popped. It didn't hurt at the time, but was tender later. Today it hurts a bit more, but I can walk. My question to guys with experience with knee problems is, "Can a knee "pop" and just be strained or pulled? Or does it go right to tearing acl or lcl?"