Spy learns the hard way that you can't backstab through über

Spy learns the hard way that you can't backstab through über

I übered a sniper with the bushman cosmetic just for fun. I choose to believe that the distraction caused by the bushman sniper along with my burly beast medic is what caused a spy to absentmindedly try to stab me while I had über up. Also, why is it called "bushman" and not "bushmann?" It should be called bushmann, in my opinion.