Short answers, pulled from the story.
Jean Doumanian replaced Lorne Michaels as executive producer of Saturday Night Live season 6. She had previously served as an associate producer for the first five seasons before taking over the role after Michaels departed due to burnout.
The Charles Rocket Who Shot C.R. sketch aired on the 21st of February 1981 on Saturday Night Live season 6. The incident occurred during the final sketch of the episode and led to immediate backlash and the firing of Jean Doumanian.
Dick Ebersol retained Eddie Murphy, Joe Piscopo, Denny Dillon, and Gail Matthius after replacing Jean Doumanian on Saturday Night Live season 6. He fired most of Doumanian's other hires including Gilbert Gottfried, Ann Risley, and Charles Rocket.
The 1981 Writers Guild of America strike ended Saturday Night Live season 6 early on the 11th of April 1981. Dick Ebersol called off the rest of the season to comply with the strike despite promising Al Franken and Tom Davis they could host the season premiere that fall.
The New York Times said the season looked almost exactly as it did in previous years but that only the shell remained. The review stated the missing ingredient was the innovative vision that made the old show special and called the new show an unfunny parody of its predecessor.