Partial Source: Pwinsider
As reported yesterday, last night's WWE RAW show was re-written several times. We can confirm that at 3:00PM, the creative team was called to re-write the show again. Vince McMahon made the final call to change things up.
The show was originally scheduled to feature a number of qualifying matches for the Elimination Chamber match. McMahon eventually decided to go with the six-man tag that headlined the show.