Rude Behavior? What do you think?

Bushmaster (Gary Brown - guitar, vocals; Vinnie Hunter - bass; Greg Phillips - drums) start their second set at Delmarva Bike Week 2009 with one of their original songs "Good Life".

Usually when there are multiple bands performing on the same stage, the same day, there is a short 15-20 minute switch over time (for the bands to move equipment around). This day there was a whole hour between bands - plenty of time (and then some)... Watch what is going on behind us by the band scheduled to go on after us - Aeroforce (an Aerosmith tribute band from Canada)...

With that in mind - How do you explain this rude behavior (at the beginning of our second hour - two hours before the next band is scheduled to start)???...
A.) the fact that we played our own original music - and the crowd liked it?
B.) did Gary not mention their band enough (even though he said it almost every song)?
C.) did one of their girlfriends stare at Gary too much, or clap too much?
D.) All of the above?

What do you think about what happened? Has something like this happened to you or your band? Please give me some feedback...