User blog comment:Thailog/Ep. 203 "Alienated" discussion/@comment-76.107.184.213-20120512150602

I'm going to go out on a limb and say that Oceanmaster must have died along with Aquagirl during the same mission. And also The Light or Black Manta must have been involved with the death of Aquagirl and Kaldur blames the team, and after he finds out it wasn't them he returns to the team :)