What the?!! (Fallen Bike)

My wife texted me this picture while I was at work. Last night when I said good night to her (the bike) she was resting soundly on a Pit Bull Rear Stand (Scrambler Specific Version) that I bought about a month ago. Last time I rode here in Portland, OR was about a week ago after which I put it back up on the stand. Will be going home shortly to investigate. Any guesses what caused it?

I have two young kids but I don't think they did it, barring some sleepwalking. And I am happily married.