I love working on moVility with powerlifters and other strength athletes because for the most part...THEY HAVE NONE! Because they have not the ability to MOVE then they end up with serious injuries around their major skeletal tissues. Basically...they aren't hitting depth and/or they have pain!
If you aren't hitting depth in your meets you can always change Federations but pain...you can only go head on through that one for so long till you have to do something about it LONG TERM!
http://vimeo.com/122582693
I found an "over and back with a band" movement to free up years-old stiffness and weakness in both my shoulders through the rotational planes. The addition of the bands tension just forces stability as well as the movement increasing the mobility. I do it before squatting and benching. (when I remember.)
I particularly love the pics of the young fella squatting. Children are born with the ability to squat. Unfortunately, life kicks it outta us.
Thanks.