How can I stop my hood latch from activating on it's own?

Sounds like a problem with the BCM (body control module) acting up. A simple solution and less expensive fix would be to disconnect the wiring harness at the trunk latch motor which will not allow it to pop itself open.

Sounds more like a loose connection or a bad/cracked solder joint in a PC board. I'd drag the dealer into this only because if this is a partial system failure, who knows what else might go next. If it only occurred when the door was closed, I'd believe it was a loose connection only, but turning off the vehicle and having it happen may be a voltage spike, and that does point to a board problem.