He will likely keep it with a couple of draws, considering how things are going. 2 points out of 12 are not too bad considering the United's standards.Yeah, what you say makes sense. The lack of availability of any obvious alternative means deciding not to sack him immediately might not be as crazy as it seems.
Re your final paragraph. I don’t think he needs 4 wins to keep his job. 3/4 will do it.