Welded door hinge repair ?

[FFredo]

Hey guys and gals. After reading a few posts where it is mentioned that I am not the only one with a truck that lower door hinges were welded in place, I'm wondering how this can be fixed? I guess it's fairly common for a previous owner to weld a hinge in place vs. repairing it correctly. I have a welded hinge on my driver lower. I really want to correct this issue and hope to avoid buying a donor door.
Can it be fixed or will I need to source a new door and lower hinge?

PS: I guess the P.O. was a big fan of quick welding fixes. He or she also used 1/4 inch plate to patch holes in the floor and kick panals *insert blank stare here*