My companions keep somehow getting crippled while not even fighting. What the hell is this crap?
Hmm... that's sounds like a glitch, but it's not one I remember ever coming across. Just to rule out some possibilities - where are you when they're getting crippled? Is it everywhere, or have you noticed that it's in a certain area? Are you sure they're getting crippled, and it's not just that you're only just now noticing that they had been? Any possibility that they happened to be walking over a trap and you hadn't noticed?
Also, are they taking damage randomly as well, or are you just seeing crippled effects showing up?
In other words - we'd probably need more data to be of any help with that. (Unless someone else has encountered this before and knows what's going on.)