[njsteve]

Where is the safety wire that is supposed to run inside the spring? It is designed to catch and hold the broken spring when it snaps, instead of letting it fly across the room. I lose one of the springs on my doors at least once a year - over the wife's car which is in and out of that garage door several times a day. Get the heaviest rated pair you can find and replace them both at the same time.

You can always try to rig up a ratcheting come-along for the spring-less side and slowly ratchet the door up to get the Chevelle outside. As you get the door up, use several vice grips as chocks so it can't slip back down.