Why was the PRODUCER FIRED from the JACKSON 5’s Motown sessions? 

The Jackson 5 have run the circuit and won the golden ticket to Motown. Berry Gordy will definitely run them through their paces since he really wasn't at the filmed audition at Hitsville. Berry was busy in Hollywood. Berry Gordy's new El Dorado is Hollywood. He's been a hitmaker and now he wants blockbusters.
The music industry may be changing under him. He's more prepared than he realizes. In an era that will bring forward the Osmond's, the Partridge family, and the Brady Bunch, he has the Jackson 5. The talented family from Gary, Indiana led by the future King of POP! Michael Jackson's talent along with his brothers' as well as a solo Diana Ross, Marvin Gaye and Stevie Wonder are about to replace the pure pop soul of Motown's 60's acts.
Holland Dozier Holland has left the fold for "greener" pastures. New to Motown are the youngsters Alphonse Mizell, Freddie Perren, Larry Mizell and Deke Richards. Berry will dub them the Corporation and for 4 years the Corporation will pen and produce SMASH hits for the Jackson 5. I want You back, ABC, The Love you save, I'll be there, Ben, Never Can say goodbye, Dancing Machine, Sugar Daddy, I wanna be where you are, and all the rest of the Jackson 5''s hits. Utilizing the mature soul of Michael Jackson and the commercial appeal of the Jackson 5, the Corporation which included Berry Gordy made the Jackson 5 the perfect transition for the Motown of the 1970's.
It's wild to think that the Michael Jackson that became the KING OF POP was in the midst of generational talent from even before he entered Hitsville. Gladys Knight, the Chi-Lites, the 5 Stairsteps, the Emotions, Sam & Dave, Joe Simon, Jackie Wilson, the Miracles and The Godfather of Soul James Brown all crossed paths with Mj, Joseph and the Jackson 5 long before Michael reached age 10. There are varying accounts as to what level of hysteria they engendered.
By July 1968 they had a choice. TV or Motown. They chose Motown. They took a ride with Bobby Taylor to Detroit and auditioned. They still weren't cleared for takeoff. Even though they had positive feedback there were roadblocks.
This video exposes the roadblocks as well as the problems Motown was having up and down the roster.