I've managed to build a version of wpa_supplicant that has ad-hoc enabled, by forward porting the patch in this thread:
After building and a couple of tests, it works.
To install, you need...
Same as for FLO; download the zip from the "Downloads" section, and follow the official CM instructions.
2013.09.21 -- ...
If I get some time this weekend, I can see if I can change the new wpa_supplicant in ICS to get ad-hoc wifi working for that.
Yes you can, I wrote a post about it on the other bluetooth thread here (and also on reddit ). I also use an android watch (LG Urbane), and before turning off Throw, the bluetooth was super flaky, and it also failed to connect to my car.
How can I undo that command later if it doesn't work?
Replace "hide" with "unhide"