That's what I did, although I just tried these steps again. When I used the volume/power buttons and chose recovery, it reboots as it should, then it tries to load the recovery, fails, then reboots and starts up the phone. I should note, and this might be the problem, is that phone boots up totally in to the full blown OS. It's Android 4.1.1 with the 3.18 kernel.
I have SuperCID, and the phone says it is unlocked with S-ON.
Does it make sense and try to flash the 2.15 firmware at this point since my HBOOT is older?