The massive jump in Biden votes out of nowhere is because Shiawassee county reported "153710" when it SHOULD have been "15371."
As you can see below, thankfully, the error was fixed.
Biden had 2,130,695 (at 4:04 AM)
Then 2,019,899 (5:19 AM)
So the error was fixed, else it would have been a blowout. But it doesn't help us now.