Plot hole: Earlier in the season, it was established that the Jem'Hadar are genetically engineered to be loyal to the Changelings, meaning they will not deliberately harm them. With that in mind, the Changelings still care about Odo's well being despite his refusal to return to them. So why didn't the Lovok Changeling send a message to the Jem'Hadar ships to inform them that a Changeling was going to be on the runabout? Given that he took time to offer another chance to return to his people, you would think he'd take time to make sure he returned to the station safely.
Other mistake: When Sisko was initially meeting and speaking with Kira, she described the station by calling it a, "Godforsaken place." From her perspective, she should have said, "Prophet-forsaken place." Also, later in the episode, Quark refers to the Bajorans as, "Godfearing people." Once again, should have been, "Prophet-fearing people."