This is very surprising. Per Vince Mercogliano:
Got a little info on Hank: I'm told he stayed late for extra work at the morning skate (on the ice and in the weight room) since the team hasn't been practicing a lot lately. He and DQ talked and decided to use Georgiev as the backup since Hank had a heavy work day. #NYR
— Vince Z. Mercogliano (@vzmercogliano) February 21, 2020
That certainly sheds some light, but still surprising.