Disconnect fuel line, attach hose to end, run other end to buckets, pull starter fuse, "crank" until tank is empty.
Dunno of that will work but seems like it will
The lawyer is going to cost you as much as another clutch. Like someone else stated, small claims court is the best way to go if the owner isn't willing to back his work.
Paint issues are typical from GM. They stopped selling color matched door handles on their white trucks because they would come out with a yellow tint.
I would say thats normal. Your a/c is cooling the dash ducts before it's cooling you. Tint your windows if you haven't already and put a collapsible shade on the front window to minimize how heat soaked the interior of your car gets. I'm in Texas and have the same issue.