On the Mindsight issue: Telepathic Static, a Hellbreaker class ability attainable through a one-level dip, blocks telepathy within a 20' radius. That might work against Mindsight, although I suppose the radar in question would be aware that something's amiss.
It's hard to qualify for, though.
EDIT: Actually, reading over it again, it would just outright cancel the Telepathy of all creatures within 20', rather than excluding that space from Telepathy. Which means it's useless for what we need.