No probs. They really knew how to kick up a fuss, eh! Must have thought the scene needed livening up a bit. There is another rumour that Kalisto and Echelon are the same thing. As the story goes, they were having a hard time cracking a particular game (I've never paid much attention to console games so can't be more specific) so they made up this whole story about the offer from Sega as a cover for delaying the release. After they'd bought themselves some extra time they switched names and released the game under the pseudonym Echelon.
There's a hell of a lot of group member cross-overs so it's difficult to keep track of who's who at the best of times. The authorities think they've killed off one group by prosecuting a few members, but then the remnants just move onto work with one of their affiliates. It's all swings and roundabouts.
Another version of events is that someone outside of the group released a fake nfo containing the Sega story, Kalisto picked up on it and decided to humour them and play along for a laugh.