Kind of a tough spot for Rick, because he pretty much said it all upon being inducted into the team's hall of fame. It'll be tough to top the perfectly delivered - THIS IS THE ONLY PLACE I EVER. WANTED. TO BE!
I think among other things, he'll try and buck up the fans and implore people to take this group into their hearts as they've done so many times. Hell, if Rick asks me, I might even do it.
I rate it as highly unlikely to happen, but a mic drop moment would be: "You've wanted me to say it for 51 years, so I will, but for one huge reason: these Sabres are going to do it: THE BUFFALO SABRES HAVE WON THE STANLEY CUP!"
And that'll get played when they actually do it.
I think the Jumbotron might fall again if he says it. The house would certainly come down.