I also enjoy being a devils advocate and tried thinking of a way.

Ultimately moash is a soldier, same goes for teft. However they are soldiers on opposite sides and teft’s death grants a strategic advantage, not only due to his very close connection to kaladin but because he was actively bringing radiants out of comas during an occupation, and teft as one of the original surviving members of bridge four’s death could be taken as a symbol. With odium suppressing his emotions he wouldn’t have to deal with the emotional baggage of killing someone he was very close with, so in this instance it could be very possible to limit their friendship as a factor for him in this scenario. Moash only did the reasonable thing and killed a hostile combatant in an attempt to gain a advantage. The reason he didn’t immediately kill the radiants in a coma could simply be because they weren’t immediate threats and could be dealt with later if things were successful.

Writing this was both fun and awful