I didn't like that either (and I think Levitz knew people wouldn't like it). I imagine wouldn't have ret-conned that event into happening unless he was going to bring it up later so if it's going to come out I would much rather it be during the early years of the Legion in Adventure then doing the "current" timeline of the Legion in the LOSH title. Imra and Garth seem to be OK in the regular book and still on good terms with Rokk so if she told them both in the past what she did it obviously didn't effect anything. If Levitz is holding it back so it all comes out 10+ years later then the story sucks even more.