Default [Q] s-off from recovery (TWRP, CWM)

My phone is stuck in RUU mode (HTC logo and 4 warning triangles).

I can get it to boot CWM or TWRP via fastboot boot. Problem is I'm S-ON with HTCDev unlock, and there's no RUU available for Bell Mobility.

Is there any way at all to get S-OFF directly from recovery? Like, run revone from adb in CWM recovery or something? Alternatively, is there any way to boot a full ROM using fastboot boot?

HTC One
HTC Sensation
Samsung Galaxy Nexus
HTC Desire Z
HTC Nexus One