Too little, too late.
The only real course of correcting this steal is for one senator and on representative object to the counting of the states electors.
However: "The only real course of correcting this steal is for one senator and on representative object to the counting of the states electors."
That would only trigger the 2 hour debate process.
In order for biden to have EC votes tossed at the fed congress, is for BOTH Senate AND House to agree to reject certain elector votes.
At this point, the Pelosi House will never agree to reject a single biden vote, and with McConnel now having congratulated biden on the "win", the Senate wouldn't either.
There is a zero percent chance the fed congress votes to toss biden votes.
Perhaps various states legislatures can rescind their elector votes, but everything left at this point is the longest of long shots.
The votes would be counted by Vice-President Pence, as President of the Senate. When there are two sets of electors for a state, he would initially decide which one to count. I think the rule about both houses concurring, would be to overrule his decision. (If someone has more information, please share it.)
For the states which have submitted two electoral packets, if he chooses the one that represents the voters, instead of the one that represents the cheaters, it would take both houses to change those votes to Biden. The House would surely do it. The Senate might jump either way. Much of the Republican establishment hates President Trump, but they would realize that if they go along with the steal, they are saying that the Democrats can now change any votes they want—which would be suicide.