Collision problem, help I'm stuck in the sand!

I've been having recurring collision problems from the very beginning of development. It seems that somehow the collision system gets confused and places my toon slightly inside the object it has collided with.. then it stops accepting any response from it. It's very possible that I am screwing this up by the way I am setting up my physics/collision model. I'm going to bring it up in a thread with some folks over at GG and see what they say. Here's a video showing my problem. It also shows off how I now use extensive overlapping collision boxes to work around the "only concave" collision box limitation.
-nic


details of my physics and collision rollout: