I was doing the Dawnguard quest "Hide and Seek" in Solitude, and I decided I could try killing the vampire as a werewolf. Now, I transformed in the middle of the town square - probably not the best thing to do especially seeing as one of my houses, Proudspire, is just around the corner - but I apparently got a 1000 bounty, according to the onscreen notifications, then I killed the vampire.
The guards and townsfolk chased me out of town as a werewolf and I swam away from the port towards Hjaalmarch. When I had reverted to my normal self I went back to Solitude and no-one has batted an eyelid at me since.
Did I get away with it? What about that supposed 1000 bounty?