Originally Posted by CC2MC
I am not sure if I can get under the head enough to cut it off, at least without damaging the paint. It would have to be some precision grinding.
If it comes to that... cut through the head and just get as close as you can. 1/16 should be doable. Air tools or a sawzall will make it quick. Shield the paint with on old licence plate or other scrap sheet. After that, driving down on the bolt center with an air hammer will take care of the rest.
I'll still put my $ on the 1" impact.
If it breaks the head off, you won't have to bother with cutting it off.