No sure any of this happened, but if Dominion did have a backdoor into their machines, then maybe they realized in the middle of the night that the preloaded transfer of votes from Trump to Biden was set too low and Trump would win despite their cheating. So the word went out to stop the counting until Dominion had a chance to download new code to increase the percentage of votes transferred from Trump to Biden.
ahh...that helps in trying to figure all this out