Yes, I would cut your original weld starting at the front. You might be able to get it to move once you get within 1/2" or so of the edge adjoining the door. If all else fails, cut it off completely and start over. Use as thin a cutoff tool as you can get.
Interesting story about your Parkinsons. Glad that gizmo is helping. Trying to weld with the shakes would be real difficult. Kudos for doing the work you're doing.
