Wireless Joint

I've got an issue with my router not booting that may be due to the wlan radio. I'd like to disable the radio to see if it is the cause so would like to know if rooter has a 'safemode' (or another way of making config changes without having access to the UI).

(My reasoning that it's the wlan radio is it boots with an OpenWRT firmware, and when I enable the wlan, it hangs and exhibits the same behavior I'm seeing with rooter.)

Ok, so I've got access to failsafe mode using a ttyl/UART serial connection. My OpenWRT experience is minimal, but I was expecting there to be a 'wireless' config file. I don't see it in '/etc/config', and 'uci show wireless' doesn't find an entry. Does Rooter do things differently, and if so, any ideas where I should be looking?