https://www.stovebolt.com/techtips/crack.htmlI was young and ambitious back then.
The trick on yours is to bring it back tight. Ratchet straps thru the window and down under door to squeeze in that direction and clamps in the other. Like you said, won't hurt to try. If it's racked/twisted, stick a 2 x 4 from inside to outside thru the window and lever it.
MIG it.