Lesnar Post-Fight

I did not have a problem with Brock Lesnar's post-fight "antics" after his historic and brutal victory over Frank Mir at UFC 100, but after watching the fight for the second time I noticed what Eric Paulson said in a recent interview. Why were Lesnar's trainers not allowed into the octagon immediately after the fight to calm Lesnar down? Why did security treat Lesnar like a criminal after he destroyed Mir and then gave Mir a piece of his mind after listening to Mir talk trash for months? Did the UFC want this type of reaction?