I've seen this with a couple of PCs now, for some reason they go all Hulk Smash! and start destroying everything around them simply by walking.
It happened once in camp, walking from Wyll to Lae'zel my PC exploded a barrel and a crate. Then, walking to her bunk she accidentally injured Scratch. That, of course, set all the companions against her and into attack mode because NOBODY hurts the dog!
The other time it happened was in the basement where you enter the Zhentarim hideout. Every attempt to search a crate just exploded the crate.
Reloading the save clears this up, but have any of you guys seen this?