If Corella’s penchant for speed has given the organization an energy boost, it’s also resulted in some casualties. In a move just days after he officially started at the helm, the company abruptly dismissed its longtime ballet master, ballet mistress and the director of its affiliated school and second company.The three – Jeffrey Gribler, and Merchantville residents Tamara Hadley and William DeGregory, had all also enjoyed long careers as star dancers with the company.