Bug in act 2 "intruders in black"

Hi there,
Not sure if this has been noticed already (and if this is the right place to post this), but in the above mentioned quest, it's possible to get the miniboss "plague retch" stuck in the scenery (in Chamber of sins lvl1).
Just wanted to make a note of it, since this is beta and all..
Anywho.. great game and keep up the good work!!

-EDIT- I got him stuck with my marauder... knock back skills