I tried passing [] as the desired Sensors, but it didn't disable anything. I suppose it's additive, but then I don't see a way to disable a sensor after requesting it.
http://pastebin.com/BDPGxPcG
Also, my initial implementation used one-shot timer callbacks, but I regularly got exceptions with more than 3 timers existing, despite only setting one concurrently (though creating one in the callback might count as 2).