I have seen cases before where the bottom gear was put on backwards resulting in a mangled chain like that...

If the timing jumped and the engine ran, there's a good chance you'll have some bent intake valves. I'd pull the head and inspect the valves and pistons, and do another timing job with all new parts.

Check engnbldr for replacements. They sell a steel backed drivers side rail that will fix a rather large vulnerability with the 22RE, and they're just all around good people over there. I'm surprised he hasn't seen this thread and commented. He must be out chopping wood or something...