I've updated the OP w/ new instructions to flash recovery
Flashing the Recovery
-download
PG86IMG-twrp-shooter-1.0.1.zip
-copy the .zip to the root of your sd card
-boot into bootloader without the usb cable connected (
adb reboot bootloader)
-you may have to select the bootloader option
-it will scan your sd card, when it finds the PG86IMG, it will prompt you to install
-you now have a custom recovery
-power down phone, boot back into bootloader without the cable plugged in
-select the recovery option
-phone will boot into recovery, I strongly suggest doing a nandroid backup!