Sommer was asked to leave for spending time with the production staff. The idea is to ignore production and do what you need to do. Somer was warned, and it continued to be a problem so she was asked to leave.Additionally, there was a break in at the house (into the LC's office). I seem to remember that specific files on the women were disturbed. We were led to believe that Sommer was also involved in that episode.
Somer also has her own website. It is something like: sommersmiles.com. I am certain you can find it with a google search.
I hope this helped.