Roy was the left-side deep safety (offense's left), and the run went behind the right tackle. Roy got blocked by an offensive lineman. Hamlin didn't get blocked at all. Roy certainly wasn't "out of position" or "lost" on that play, and he certainly wasn't to blame on that run. Blame Ayodele and James for completely overrunning the play, or blame Ellis for pitter-patting down the line of scrimmage when he was completely unblocked.
Roy was lined up as the right-side safety (offense's right), and the run went behind the left guard and further to the left downfield (away from Roy). Roy pursued it across the field and got in on the tackle. Again, he wasn't "lost" or "out of position."
I already said what happened on that play in a previous post. Roy had the outside run gap, and three guys blew their gap inside -- right where Jones ran. By all means, let's not blame the guy who whiffed on the tackle at the line of scrimmage or the two guys who couldn't beat their man. Let's blame the guy who wasn't even supposed to be in the middle.