TMZ has apparently solved the Fred Durst/SummerSlam mystery, reporting he was not thrown out for flipping off the camera. The publication reports Durst actually left the crowd to go apologize to the producers.
A WWE representative told TMZ that reports indicating Durst was kicked out are 100% false but condemned his actions in the following statement:
"We appreciate Fred’s apology. However, we take our family-friendly environment very seriously and this was a violation of that. We sincerely apologize to our fans.”
I heard Durst angered Kevin Dunn and the production staff for throwing up his middle finger, drawing a considerable amount of criticism backstage. You can read coverage by TMZ at this link.