Today I learn I can fully disassemble the hot end of my 3d printer and that won’t help to remove stuck filament.
FML. Pray for me 🙏 
Discussion
Lord, give me strength!
🙌
I got the 10mm of filament out, that was it, a tiny bit of MF plastic... reassembly in process.
This happened to me once, no idea why it can get so stuck. It’s like midway through spinning the spool they put glue in the filament instead of PLA.