And that's why they took his legs off, his weapons, and implanted him with not one, but two separate fail safes. If he so much as lifts a finger (I don't know if your using the fact that transformers used to have brains, or if he has a spark like in later media and comics) but whichever one it is, that will blow up, aND if that doesn't kill him, they have the back up electric pulses, which will shut down his systems forcefully.