In answer to your question Drat, I will state the obvious and say, get rid if the right manager is available. DOL is not the right man for the job for the reasons stated in a previous post.
Who that manager is, I can't answer, but it has to be an O'Neill style manager and not a DOL one.
Thats not to say I don't think DOL is a decent manager as I do but I think at the moment DOL and Villa do not satisfy each others needs.