I thought it was strange that it was not mentioned the actor was leaving, so the scenes today with Bo bringing him back were not that big of a surprise, but it was still well done.
I have to say this was one of the first times I fell for someone dying. Normally any emotional possibly dying scenes are something I fast forward through fairly quickly because I'm not invested since we know the person isn't leaving. In this case for some reason I thought maybe they were really good at keeping his leaving a secret.