My Sens have had a similar problem with Holtby sitting most nights since early December. Hopefully he gets more starts now that Grubauer has been sent back to the A.
I'm thinking Grubauer might be back sooner than later after he gets straightened out in the AHL. Look at Martin Jones in LA. Shooters figured him out and after a quick fine tuning stint in the A he was recalled after Benny boy got dealt to Edmonton.