I agree they might not do it, but they should as it might be there only chance.
I suppose you're assuming there's a one-time, use-it-or-lose-it provision. We don't know that to be the case, or even that it's more likely than not. Under the NBA's CBA, teams can use the amnesty buyout once during the life of the CBA, and it did not have to be immediately after the ratification of the CBA--it just has to be before the 2015-16 season.
Also, buying him out now makes zero fiscal sense for the Sabres. Leino's already collected $15m (!) from the team for one season of play: $6m for 2011-12, $4.5m signing bonus on 7/1/11, $4.5m signing bonus on 7/1/12. For that money, they should give him more than just one season to prove himself in Buffalo. Second, maybe you don't care because it isn't your money, but the Sabres would likely still be on the hook for the remainder of money owed (less the compensation earned from other teams during the period that he would have otherwise been under contract with the Sabres). Even being generous and assuming he would earn $8m-10m from other teams during that period, he would've earned approximately $19m-$21m for one season with the Sabres.
He certainly underwhelmed and underperformed last season, but he's not Scott Gomez. Give him another season or two before even considering it.
I get the sense they're pumping the breaks a little, but they haven't wrecked the car at least. Sounds like there's still a lot of work to be done, but hey, at least they're willing to get together again.
So from what I've gleaned from the CBA thread, the NHL has offered to pay all current salaries in full over the next three years. It thats the case this should be over. But now apparently Fehr wants full salaries paid for the shortened season. If that's the case he can **** rIght off.