Roswell was saying about a trap if that was a memphis trap or thanatos we don't know.
Thanatos i won't even speculate about that he's too much of a plot black hole considering the 'i know everything' he's got going on. Either he knows what he's doing and this helps or he's trying something new and has no idea how it will turn out. (worth noting we still don't know who his master truely is and this could be something he was just asked to do)
Choosing who to go with Oz is very likely the center point of the next day. Personally leaning to sending Tyson or Dean. Tyson because like he said he can see in the dark but i also think Grizz would put him in harms was because he knows how well liked he is as a curve ball. Dean i'd send just because he's sus.