Find 7 HARD brick after latest CM12 nightly

I think I might be screwed.

I've been updating with CM12 nightlies about every third of sixth one since the first one and never had a problem. Until today.

Downloaded the 9/21 CM 12 nightly after running my weekly Titanium backup.

Rebooted into TWRP recovery, flashed the zip file for CM12, wiped cached and rebooted. Except the phone rebooted into fastboot. Uh oh.

Phone will no only boot into fastboot, with just the power button = fastboot, power+vol up = fastboot, power+vol down = fastboot.

Plugged phone into computer with USB, PDANet recognizes the phone as having been connected but won't run because adb.exe is installed. Phone shows up in Device Manager with correct driver, listed as Android Device. Phone does NOT show up in Windows 7 Explorer. ADB does NOT work because it doesn't list any devices.

I can run fastboot and all fastboot commands from a command prompt. I've flashed several new recovery images but still cannot reboot into recovery.
I've deleted and updated drivers over and over.
I've pulled battery, SIM card, SD card in every combination I can think of.

In all cases I can only boot to fastboot.

I LOVED this phone! My best phone ever!

Any ideas?

Thanks,

-AJ