Well that is unusual, but I have jawlock myself. I get it when my body tends to be attempting to eliminate toxins and my jaw will lock up to the point I can hardly fit a toothbrush into brush my teeth (ring any bells?).

It's possible, but this might sound far fetched, sometimes when there has been a bit of an injury or something, that the body will retrace the symptoms to try and heal the problem.

E.g. something someone had a while back may reappear again in order to heal. Also they talk about the 7 day immune cycle, which seems that whatever you had done on oneday, your immunity tends to go down hill on the same day the next week, and so on.

So this maybe what is happening to you. It may go again, and then recur. But if it continues? Then you will have to go and see someone to get it looked at and see if there has been any damage done.