Entering the 2006 season, Porter publicly voiced his dissatisfaction with newly hired head coach Art Shell, and during training camp, demanded to be traded. Porter's conflict with Shell occurred very early in training camp, when Shell announced that champagne would no longer be allowed at the training facility. In addition to his public complaints, he reportedly parked in owner Al Davis's personal parking spot. As a result of his attitude, Coach Shell deactivated him "until further notice".ESPN – Confined to doghouse: Raiders' Porter still inactive – NFL. Sports.espn.go.com (September 17, 2006). Retrieved on 2017-04-08.
