Yes me too! I'm going to try and see how often you can replicate the results tonight, as like I said I stopped throwing things after encountering the bug 2 or 3 times.

Yeah exactly like that Darcion. I've had both the "dive" animation occur repeatedly before being locked in place, as well as being stuck in the "army man grenade" pose. As far as I can tell the standing throw results in the dive, while a throw from a knelt position results in the army man lock.

It's got me scared to throw things!