I have a single vocal track with nothing in the effects bin and no sends at all on the track. The output is set to master, but for some crazy reason it is still being effected by a buss I have a reverb on??
 
I even closed the program and fired it up again, still the same thing. The only way to stop the reverb is to shut it off on the buss, but I have other things routed to that buss for that reverb!
 
What am I missing here??

If you cannot track down the source, create a new bus, move the reverb to the new bus, mute the old bus. Now, the reverb should not be in the mix. Move the sends currently routed to the muted bus to the new reverb bus one at a time, listening to the result.