Ok, i know I put SUPERURGENT in the title, but i've my finals for my architecture degree in 9 days, and I've a big big big model to print, in parts, and I'm about 1/10th through it. So help will earn you a beer if you're ever near me. No joke, your choice in beer.
My hot end has jammed. I tried the floss-your-printer trick with guitar wire, and it got a lot of it, but it's not feeding at all. So, I took apart the hot end, and there was a string. It was still kinda hot, and a pliers got a bit of it, but there's still a little blob. I took a photo, but it's just with my phone, but it's kinda visible.

Now, here's my questions.
1. Can i, in repetier host, heat the extruder to ~175-190 to try to just remove that?
2. If i use a drill/grinder to remove that, should that fix it?
3. What about something like nitromores?
4. If I remove this jam, will I be able to print again or is my hot end toast? <<--- This is worst case scenario, because it means I won't have a model for finals, and I'll be up the creak.
As you can probably tell, I'm panicking to f*** at the moment.