At least they caught the guy - imagine how he'd try to paint the TSA as useless if he was allowed on through.
You poke the bear, you get the horns.
2) Being able to smuggle a watch through security at an airport wouldn't be grounds for much celebration.
3) What kind of bears have horns?
4) We don't know the full details (the official story could be wildly exaggerated), but if the TSA over-reacted then it doesn't really matter what the intentions of the artist were. If the artist was just a dude with a strange watch or if he was trying to show us the limits of our freedoms, our freedoms are still limited.