If I understood correctly, you now have phillz on laf, and twrp on recovery? And when you try to enter anything else than laf (now phillz), you get stuck in fastboot?
If I got that right, then why you don't just flash back stock laf.img (fastboot flash laf laf.img) to enter download mode, so you can start from step one (stock rom)? Don't forget EMERGENCY_CS in flashtool.
btw, take out SD card, just in case.
One little story, a mishap of mine:
I was once stuck in a bootloop, or should I say recoveryloop when I flashed badly built recovery I made. What got me stuck was that I issued "reboot recovery" command from system, and no matter what I did, phone tried to enter (my faulty) recovery. Luckily, I already had laf in laf partition. Just flashed kdz, and I was on my feet.
Point of this story is that you're maybe now in a fastboot loop