Maureen
I wish you all the very best today for your results. I think us wives and partners deal with this in the only way we can. By being there and being supportive in every way possible. Your husband probably isn't burying his head in the sand he is just reacting to the worst change imaginable to him right now. Denial is how the mind copes initially.
This is why it is so critical for you to be everything he cannot. He almost certainly will move into acceptance at some point and when he does he will turn to you to answer all the questions he wanted to ask but just couldn't at the time.
I considered myself to be Mick's wingman, I never had control of the fight but I was there to provide cover from the enemy and to support his fight however best I could.
Probably not the best analogy but it worked for me.
I will be thinking of you, Trish and your Husbands today as all of us here will be.
Very best wishes
Xx
Mo