Perhaps he was upset about the "social experiment" Homme conducted with the audience; seeing which player - Grohl or Jones - was the more popular by applause? Or the comment about the "one Foo Fighters fan" in the audience? I don't know, but it almost felt like Grohl was dissing the audience and the band by walking off immediately following the last note. Hell, maybe he just had to take a big dump... either way, aside from Grohl's questionable behavior at the end - I had a great time and saw some amazing musicianship - Grohl included!

An amazing show - but what was the deal with Grohl walking off without taking a bow with the rest of the band at the end?