Getting your board in front of you is fine and dandy but it isn't always an option. Sounds like in this instance, riding in "control" would have served the OP better. If you have to take such a drastic measure to avoid hitting someone, control wasn't there. All above things given, probably a better choice to do what he did. Colliding with someone unexpectedly could kill. Good luck with the recovery. Sounds like it's going to be a bitch, but you will eventually put it behind you and you'll get back to riding at some point.