Well it's pretty much Omac Project context. Superman, the JSA (can't recall who besides Powergirl), Hal, Nightwing, and Canary all left after checking out Teds' lead. Canary apologizing for Ted leading them out there for no apparent reason. I suppose Ted could have told Booster that since he definitely told him about Bruces' total disregard for him. The J'onn thing happened after Ted left him and Scott/Barda were notably absent in the JLI-ish Omac Project gathering.
See, that's why you don't want to get Booster angry.