I didn't think the group at the end was Oceanside since there were dudes in the group.
I assume Rick saw Heath and/or Father Gabriel at the end of the episode.
I liked the episode and didn't really feel as though it dragged.
Me either. At all, really. It had a feeling of tenseness the whole time, I thought. After seven seasons, it's actually a pretty remarkable feat that the show writers can still make me feel on edge with main characters almost getting bit or swarmed by zombies, even though the zombies are almost an afterthought as far as survival goes these days.