Why not just pick up a silicone baking mat from Bed Bath etc..
http://www.bedbathandbeyond.com/product.asp?SKU=14715754
No more razors, no more scraping.. Says it's FDA approved and handles temps up to 480f. I blasted about four grams on one the other night. No apparent issues. Minor residue left on mat but less then would be left on pyrex and a hell of a lot easier then scraping up and dealing with the stickiness of it all.
Quit being lazy and learn how to scrape a pan.
Glass, ceramic, stainless steel, teflon, and I think ptfe is ok, not sure on the last one. Quit being lazy and learn how to scrape a pan.
GW have you tried putting anything non stick in the bottom of the MKIII ?