This is so annoying!!

I've just started s4, alr loving the idea of all those people fighting for the fellowship. But why for the love of God did they bring foreman back TO WORK FOR HOUSE?? I get that he was blackballed and couldn't get any job after leaving but what happened to all his reasoning towards the end of s3. Did that just go out of the window when he couldn't get a job? I don't hate his character but it annoyed me that he shut down cuddys offer of having his own diagnostic team because he didn't want to work near house just for him to end up working for him a few episodes later!!