Very true. Dombrowski was hired as an intern and Roland Hemond quickly saw his potential. He moved up in the front office. When Hawk took over, given that Dave was Roland's protegee, he fired him.
I'm guessing Hawk just wanted his own people in all positions.
This is from the chapter I wrote on Hawk's tenure for Dr. Fletcher's next White Sox book:
"Hemond protegee Dave Dombrowski, who was an administrative assistant, was let go because of philosophical differences. (Dombrowski would go on to a stellar front office career with Montreal, Florida, Detroit, Boston and Philadelphia making the World Series five times, winning twice)."