I think Sisko had to deal with events on the station regarding the Dominion. It's hard to say what he was doing, but I think he was there to keep a presense on the station incase there was an attack. Or, maybe he was ordered to stay on the station just as Picard was ordered to avoid Sector 001 and go to the Neutral Zone. I think Sisko was probably following orders. Or maybe Worf stole the Defiant against Sisko's will and didn't face consequences due to his restoration of the timeline.
*The word "dabo" means "I will give" in Latin, and "Gold" in Aramaic.
J.J. "Binks" Abrams is taking over sci-fi!