Jim Ross being called in to the ring and told he was "fired" and then tipped his hat and walked out was an unplanned segment for Ross according to F4Wonline.
They are reporting that the segment of John Laurinaitis "firing" Ross wasn't in the script. It has been said that JR's wife was sitting in the front row and could be seen getting very excited when her husband was getting in the ring and then had no idea that being "fired" was taking place on that night.
As he normally does, Ross has been answering questions with fans on Twitter and has stated that it was "embarrassing."
Regarding last night's show, it's said that what ended up airing was almost nowhere near what was originally wrote. Everything on last night's show was re-written more than once.