Heat makes the best stripper too.
By the way, excellent catch, Don...I was so busy looking for bolts I missed the elephant in the pic!
Aaron, I would bet its just filler holding it together. If it needed to be welded, there would likely have been missing bolts and obvious damage, making the weld necessary. If you use a propane torch you can quickly soften the paint and filler so it will easily scrape off with a chisel or putty knife. Only heat enough to soften the plastic, but not do much to discolor the metal, or it will warp. It only takes 170 degrees Fahrenheit to soften the filler. It's also the only way I know of to unglue a close fitting panel like this.
Learned this from many years of restoring plastic cars...