How the hell do you get trapped in a gas station bathroom? Did the door get stuck? If you got it open in the first place I can't imagine it'd be that hard. Did he drop the key in the shitter and flush? Most of those gas station bathrooms at least open from the outside and have a big stick or something attached to them.
This all sounds VERY suspicious. Did he go in there to do cocaine and then started freaking out and assumed he was locked in? Garden shears and a leg kick...
And how annoying: "It wasn't immediately known where the gas station was located in New Jersey." I was hoping to Google Map it and check out the neighborhood.