I believe what is gonna get him into trouble is that he put himself in that situation by stopping at the bar if he knew they were right behind him he needed to lose them before stopping. by stopping he made them a threat. now I dont know if they drove around the block and then pulled up or if they pulled in with him but if they were right on him he should have kept going tell he lost them.
So...stay on a BIKE being chased by a truck with drunks yelling at you, vs. at least get parked, and somewhat equalize things? Personally, I'd have been much more afraid on the road than after everyone got "dismounted". I agree that we don't know all the details, but with what is presented, I'm giving benefit of doubt until I hear otherwise.