Whoa there! That's nowhere near what could be done constitutionally. If the Florida legislature sent the certified delegates and the Florida Supreme Court sent another or they sent no delegates at all, I believe it then goes to the U.S. House of Representatives.
But I know the U.S. Senate and Gov. of Florida would have no power in the issue.
On reflection I think your right that the next step would be the US House of Reps, although I do remember one of the legal types explaining a course of events where it could have ended up in the US Senate and have been kicked back to Jeb Bush in the case of a tie--it just stuck in my mind because of the irony.