Then the good part - This indentation would oil can.. which was my biggest motivator for pulling on the quarter:
The concave region right above the body line was pushed out some. After I straightened the rigid fold, I knocked this concave region (orange) in while pushing out along the convex upper section (red) and it held!
With much amazement, I found the buckled section that oil-canned had straightened out and was actually holding some shape!!
This is where I ended today. I plan to weld the tear next, then strip and start looking more objectively at the shape... but so far, it's better than where it started.