So ummm... while I was installing a new amp and speakers in my 2016 Mazda 6, my husband put my battery back in for me. Only, he put it in backward. One burst of pretty light and a puff of smoke later, I now have a car that won't start and a blown positive battery terminal fuse block. I've already bought the new block, but I'm having trouble getting it installed due to this one bolt. It'll be the one with the blue mark in the picture. I have to take that part off to use on the new fuse block. Anyone have any clue how to get this thing off without killing myself? I don't want to say what I've tried so far. Also, hi! I've been lurking a while and just joined. Nice to meet you