Yeah, no....I think we know what he's looking at and it ain't a pretty picture. That plastic gets super brittle with the thousand or so heat cycles during it's life and now, whenever it even sees a tool, it breaks off.
You are going to have to fashion a tool....after DISCONNECTING the battery, that reaches under the offending fuse. I've made this stuff from those cheap yellow handle mine screw drivers b/c they bend. Once you grind the last 3/16 or so flat, bend the last bit enough to get it under but also slide down in the space you have, which isn't much. That might not work but hopefully, it'll spark some other idea if it doesn't. You are going to have to go MacGyver on this one!
The other option is to unbolt it and investigate whether you can replace it w/o screwing it up?
I don't envy you with this......it's a lot easier to damage more crap then it is to fix the bad part. It's not the ideal situation.
jeff