I've used every rolling technique I can find and so far nothing seems to make a difference. Then again, the intermittent nature of the problem makes that a hard call to make.

Last night at my KB training group our coach hit our glutes HARD. I've also been focusing on hip ROM at various times of the day. Last night I had a repeat of the problem but the severity was greatly reduced! That has never happened, the severety has always been the same. Unsure if a coincidence or not, but will continue and see what happens.