WWE ran an angle prior to Raw where Brock Lesnar beat up Dean Ambrose upon his arrival to the Joe Louis Arena in Detroit, Michigan. You can watch embedded in the video below:
WWE has just received fan footage of Brock Lesnar attacking Dean Ambrose in the parking lot of the Joe Louis Arena before WWE Raw!
Posted by WWE on Monday, February 22, 2016
There was a change to the script at WWE Fastlane, where WWE decided to move in this direction. We have more details at this link.