You're wrong on point one. And he'll get exactly the same salary, if not better, when the new owners take over. Do you think Glazers behaving in a way that alienates the key person associated with restoring the club's brand is going to have no impact. The Glazers aren't immune to pressure, they're not bullet-proof; they just happen to be based across the Atlantic. But they're not controllers of financial or political power, where any of these wall street people have to tiptoe around them; all they're doing is further confirming their ineptitude and pissing both 'ordinary' fans and people who stand to capitalize from a deal going through.
EDIT: There have already been reports that investors were prepared to sue Glazers (and Ratcliffe potentially, if structure of his deal remained as is and went through) for selling shares at different prices for a partial take-over but also, potentially, for failing to complete the takeover at all (and therefore not only tanking the price but costing them the opportunity to cash out on this). Finance people can explain this better, but to think that Glazers are magically immune to 'bad press' or to being threatened with litigation when it costs other wealthy people money is itself a form of negative 'magic thinking'