While unnecessaryfor SH,Turley needs to have given 2 weeks notice to the executive committee.
Pohl resigned on FEB 13 effective immediately
JT resigned on Feb 28
2 weeks after Pohl resigned.
I would say that both Pohl and JT were somehow forced to resign
and that Dave being chairman of a board that rarely meets was able to leave forthwith,
JT on the other hand needed to hang around for the required 2 weeks,.