Paper2D Object flying off randomly w/ Physics (video)

I made a video showing the issue here: https://goo.gl/photos/Bz19ZZBLLwvZ6uSP7

Basically I have a collision box with a flipbook and I’ve added physics & collision and it flys off. Does anyone have any idea why and how to fix? Game is basically a 2.5D game (flat pawn able to move in a 3D environment).

Please help!