Ghosts who like lots of light when they host late night dinner parties? ;)

That really is odd. I don't know what frequency Bose runs on. Ask him to take the battery out of the MX-3000 before he goes to bed one night and see if the lights still come on. If they do, you've eliminated the MX-3000 from your list of suspects. Next, try doing the same with the Bose remotes on the following night.

A process of elimination should isolate potential causes. If none of the remotes are causing it, it may be something else in the house, a neighbor with the same dimmers, or even transient RF from something else in the area (airport, military base, power plant, etc.).

Thank you,
Damon
Control Systems Consultant & Programmer