After Ryan asks the girls to go to the private conference room, he threatens the Chipmunks that if they talk to, look at, or even think about those girls, they're dead. And then they chased the Chipmunks! Then they grabbed Simon and dropped him in a toilet! Thankfully, Alvin saved Simon. But after that, Alvin and Simon fought back!
Taken from Alvin and the Chipmunks:
The Squeakquel 2010 Australian DVD.