Continuity mistake: When Carrie knocks the vase to the floor, it rolls away and settles beside the leg of her couch. In the next shot, it's lying on the floor next to the table she knocked it from.
Continuity mistake: While drinking with Jerry, Sam toasts with her right hand, but a shot later she holds the drink with her left.
Answer: I'm a long-time fan of the show, having re-watched it many times, and I definitely remember slightly different dialogue at the end of that episode than what's on my DVD. I'm afraid I have no idea why this change might have been made or any other info, but you're not insane.
Purple_Girl