Not sure if this has any use or is already known, but while messing around with replays I found this.

http://gfycat.com/ImpartialGiddyCapeghostfrog

Just do a replay (F3->F1) and you should be fireproof.

This would be a great find if you didn't get this glitch (or at least for me) Dunno if this also happens for the Steam version

http://www.twitch.tv/menno888/c/5176940

Got it twice during 100% runs, good to know what causes it