Sure bfonz, I've certainly experienced that. I think every player that likes hitting the ball hard has gone through that.
I used to have my wrist cocked and firm during my backswing, kind of like a lot of the women on tour, but I now keep my hand, wrist, and arm flexed just barely enough to keep my racquet up while going through my backswing. This sets me up for completing a smooth relaxed swing and usually prevents me from breaking the kinetic chain by trying to force things.
It's pretty much a habit for me now, but sometimes wanting to crush a ball gets the best of me and I tighten up.
It's just like baseball, you never hit a homer when you try to.