Would it be feasible for a driver patch to be shared via e.g. an anonymous torrent, with a checksum (to certify authenticity) held somewhere more reliable, like GitHub?
Post the patch in a country that doesn't care? I remember OpenBSD used to do something similar with encryption to get around US laws.
Sounds like what we used to go through years ago with sound editors that had to have a separate button for downloading and inserting the MP3 encoder because the Fraunhofer license prohibited it from being directly distributed with the software.