OOC:
That is a good concern! It isn't an issue, however, as the orcs don't have any means across the river, and it is unlikely they would even want to do so as a group. This is a twice-defeated group, and they are looking for a relatively safe place to regroup and recover. They though the Remnant would be that, but their overly ambitious leader prevented that from happening when he went too far trying to summon help.
Note that while the Remnant appears to now be empty, it might not stay that way forever ...
As you continue to explore the inner area on this floor, you see that all of the small rooms are indeed residential. While they all have similar styling, there are differences because of their non-uniform sizes and the particular god they were devoted to. There were not a uniform number of attendants per god. Instead some had more and some less. It appears that the goddess of Death had only two rooms for attendants, while the goddess of Family had several. The two corner suits (in the two northern corners) are interesting in that they have a large office in front of the residence room. One was for what appeared to be the chief attendant for the goddess of Civilization, but the other was for someone who apparently served the pantheon as a whole, not an individual god or goddess. The two residences next to his appear to be similarly devoted. However, regardless of what god a particular residence was devoted to (or not), it is apparent that nothing worth looting remains. Not even a copper. Even the two large rooms don't have anything.
The central rooms had various group functions. The big room on the southern edge of the center "blob" was a group dining area. The area with the body parts was originally for food storage; the room directly to the west was for food preparation. Both of these seem to be heavily fouled. It would take strong magic to get these two cleaned up enough to use again. North of both of these was a second dining area. It isn't clear why one would be used over the other, but it is there. The three isolated room on the west, north, and east sides were just general storage for linens, service, cleaning supplies, vellum, ink, writing tools, and stuff like that.
Other than what was found on the orc arm, and the leader in the garden, there is a surprising lack of magic items or money. They appear to have truly cleaned things out when they left.
OOC:
Anyone that wants to double-check can give me a roll. Otherwise, where do you want to check next?