Interesting discussion about concrete pavers/blocks. If Joe came into the MH to steal Ron's gun he came in through the front door, since the backdoor was seldom used and deadlocked. If Joe took HaLeigh he would have gone back out the front door, the same way Tommy went.
So .... given that the MH was staged for an abduction with the backdoor open and a concrete block to prop the screen door open, why would Joe need to do that on the way out and .... why would he risk coming back to do that?
Hmmmm. Pick a story. The stranger abduction staging does not fit with the accusation of Joe attacking Misty and taking HaLeigh.