The Samsonov injury is interesting. Presumably if he couldn't even make the trip to the bubble where he would have theoretically been useful as far gone as late September then it's probably a pretty bad injury. On the flip side, maybe they made him stay because he requires a specialist and specific type of rehab not available in the bubble. I mean that Tik Tok video was right before camp, so after the injury, and he seemed limber enough.
I think if the injury was really a long term fear you'd maybe see the team get creative and renew interest in Holtby. As I've said a few times, it makes the most sense for Holtby to sign a 1 year deal so he can be a UFA in a year where the cap isn't flat and there is a 32nd team looking for their franchise G. Whether that is DC seems unclear and unlikely, but stranger things have happened.