You'd want to use the Bluetooth PAN or CTP profile, both of which are lacking from the handsets. SPP will suck your battery dry in no time.

I find the price of Bluetooth APs prohibitive,...

Is it possible to have a WRT widget terminate itself?

Flash Lite has this capability (fs2command("Quit")), how about WRT?

I've gone through the FN Web Developer Library -- no mention there.

Have you registered the OMA DRM MIME types on your web server? Simply register the following extensions and MIME types:

.cdf application/vnd.oma.drm.content
.dm ...