Alright, just thought this may be helpful to some people. If this is a repost, by all means, close the thread, but I couldn't find this. What this macro does is cast Displacer Beast and instantly cancel it, so you don't have to worry about canceling prowl and cat form if you just want to use Displacer Beast as a sort of "Blink".
Anyways, here it is: "/cast Displacer Beast
/cast [Form:2] Cat Form"
Just make that sucker a macro, drag it anywhere on your bars, and double click it (The faster the better).
Enjoy