Alright, I figured it out. My UV operations were set to vertices instead of points, which I guess is not good when you're dealing with SubD surfaces. Unfortunately I was using UVPelt, which as it turns out, actually splits the geometry along your selection when you set it to points unlike, say, the UVProject SOP. So then tried AttributePromote, but my UVEdits are still a little messed up along the borders because they were expecting verts instead of points, now they need to be redone. Those damn UVPelts were a lot of work. :x
Oh well, at least I know what I need to do now. Thanks again for your help deecue!
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edit: ok, I doubt anyone cares but there is a better way. I just changed the AttributeCreate SOPs from points to vertecies. I do have to redo the Paint SOPs, but that's minor compared to having to redo the UVPelts (which is damn near impossible if you're trying to make them work with points). Disaster averted.