@harris78
All your points are valid of course.
I imagine from the Boards point of view the cost of relegation is still not a real cost. We probably won't go down (although it's becoming more and more scary). It's a cost we probably won't have to pay. Even if we keep Martinez.
Sacking him would cost real money.
I hope that point makes sense, I've not explained it very well.
And the 'the new man can't do any worse' argument is valid too. You'd think not. But it could get worse. We're not getting smashed each game for example. Could happen with a new manager/caretaker trying to sort his ideas out on the team.
It's all ifs and buts and I don't think anything either of us have said is wrong.
I just think getting someone else in could, I repeat could, not have the effect some people seem to think it will.