Theymos and Badbear can, but probably won't read your PM's. There will be exceptions though, I think once the Feds asked theymos to hand over someone's PM's after they discovered he had been part of/running (can't remember which) silk road.
It was running silk road and it was the altoid account. I am fairly certain that this is not the first time theymos has turned over PM's from the forum