If Pence had done what Trump wanted and ... used the alternate electors? Or sent it "back to the states" -- what would have happened next?

Could Trump have been named the winner of the election that day? (By Pence, using the false electors?)

In the "send back to the states" case would it then be up to each legislator to change which electors they would send? Would we have had to try to pressure them not to? Or would that be recognizing legitimate actions as legitimate?