User blog comment:Thailog/Ep. 207 "Depths" discussion/@comment-96.241.72.70-20120608230131

This is just a theory, but...Could what has Wally so shaken up have anything to do with what happened to Tula? It was the first (real) death that the team had ever experienced and would have greatly damaged their developing sense of confidence. Plus, if Artemis was almost gravely injured/killed or Wally felt responsible, it would make it worse for him. It would also explain Kaldur's resentment if he thought someone on the team was SPECIFICALLY responsible, rather than simple guilt by association. (Personally, I think Manta was involved, but we'll see.)

Oh, and I agree with several of the other posters. Lagoon Boy's days with "Angelfish" may be numbered. Hurray!