No, what is most likely in my opinion is a possible soviet civil war! Between saner people like Khrushchev who know that their country and its existence is hanging on by a thread and do not wish to escalate even if it means a loss of face; against idiotic hardliners who do not care about consequences and are more worried about proving their strength and saving their face. Already
@Sorairo mentioned about Suslov. Hardcore ideologists are impeccable on theory but hopeless when it comes to reality. Ideologists are by nature always hovering at the brink of descending into fanaticism and zealotry. A defeat like this means a defeat of their very thought process, which they cannot accept, no matter the cost. If Khrushchev decides not to escalate, I can very easily see people like Suslov or Andropov staging a coup and offing Khrushchev.
Zealots and fanatics cannot be bargained with and reasoned with. Aflaq being a prime example here of how that ends ITTL. Now, I guess it is the communist's time to pay the butcher's bill.