I've been bringing bikes into various offices for 15 years. My spare road bike is behind me right now for lunchtime rides to the beach.
I was once working off-site over a weekend (working with another company, not for it) when a friend called me for a ride. I needed the pedals off the bike I had at that office and I left a bit of a mess in my haste - knocked off dry dirt on the floor - but fully intended to clean it up on my return. When I got back, the bike was gone. It seemed that the cleaning lady had complained to the crotchety old office manager, who had TAKEN MY BIKE AND LOCKED IT UP. I had been keeping bikes in their office for 6 months at that point and one of their employees commuted everyday and left his bike in the locker/shower area.
Anyway, there was much yelling. He was not expecting this. He was PISSED but he gave me my bike back.
The following Monday, still pissed myself, I threatened to file a police complaint (not having any idea if I even could) but didn't follow through. My boss was completely amused by the whole thing and refused to even go talk to the a-hole. I got great joy out of the thought of him stewing in his office over it.
And poor commuter guy was the one who suffered. The New Rule to spite me (no bikes) meant he had to leave his outside. I just kept mine in the car.