Running ally 2.2.2. Rooted with superoneclick. Attempted flashing recovery as described. No errors when issuing commands. Used terminal emulator to do it. Entered command 'reboot' at the end. Held the buttons in on boot to enter recovery. I ended up in safe mode. Did I miss something?
Joined IRC and had a discussion with some folks there. I ended up downloading "quick boot" app and was able to boot into both fastboot and recovery that I had flashed. I just now turned off my phone and attempted booting into recovery - it worked this time.