I knew about the Gorillas moving each other like that but decided not to do it. It's like one of them is pushing the other one. Might consider changing it though.
I think in some cases it makes sense for them to move each other, but if some are supposed to be there as static obstacles I think when the other gorillas move them it can create unintended challenges. I thought it was fine but could see it frustrating someone. Again, awesome game!