I mean I don't think its totally unknown for members of popular bands, either male OR female, to hide marriages, for example, or at the very least still give a general impression of availability even if they don't intend to ever act on it.
I think its close to incontrovertible fact that people will respond less to someone who is in a... er... sexualized profession if they know that person can't even THEORETICALLY be theirs. It seems like human nature to me, just as it seems like someone has to make a deliberate choice in their career if they want to leverage their sexuality, and its probably not a crying tragedy if THEY choose to suppress their real nature for career advancement. That's not to say all bands are sexualized, or even all boy bands, but n'Sync was from the very beginning.
It sounds a lot like this was all his choice--both the hiding and the revealing. Which, given the fact that n'Sync hasn't been a going concern for a long time kind of leads to a big "so what?"
Got to wonder if this reinforces the whole stereotype that "Lance" is kind of a... er... common gay name though. I mean Lance Armstong had fought that one back in recent years.
The whole Reichen thing though? Ick. Couldn't Lance do better than that?