Stay0puft, your issue is similar, except you seem to be shutting it down normally and it doesn't re-start.
The issue I'm having is that I close the comm manager/wireless manager with the "X" while the system is still processing the radio shutdown. Then it cannot be selected back "on". I can disable the radio and turn it back on as long as I wait for the system to finish the shutdown process as many times as I want.
They may be related issues, though...
G_Fresh - not sure I have too many options when it comes to the radios, I think the ROM that I'm running only works with a couple of radios and this one was one of the better ones.
AT&T Tilt (HTC Kaiser)
Dutty's WM 6.1 V2 Hybrid
Jockyw2001's HardSPL 3.56
Flashed & worked without tweaks the first time!