To add more context to the KD exit - Antino Jackson, Noah Robotham, Josh Williams, and Aaron Jackson were the best players with remaining eligibility. Groce had an opportunity to pitch to all 4, and all 4 transferred elsewhere (none to Duquesne). (That's not a knock on Groce, just the reality of the situation.)
As @kreed5120 said, turnover is very common with a coaching change. It may not be that way with Ford because it's a unique situation where the players already know him well and vice-versa. We can only hope.