Dad Just Died and Sibling Attacks

I am the youngest of four children. My mother is 86 and unhappy with the healthcare decisions that my brother helped her make for my dad. My mother believes that my dad was put in a nursing home unnecessarily.

She decided to remove my brother as healthcare surrogate and name me in his stead. My brother completely flipped out because when he asked my mother why she did it she said that she didn't want to be put in a nursing home. She never was one to gloss things over. A simple "it's just more practical" approach would have sufficed.

So now that my mom is staying with me, as my father did the last six weeks of his life, my brother has called and given her the ultimatum that he would never visit my home ever again and the only way he would see her was at her home an hour and a half away. He bashed my husband and I and upset my mother a lot. He accused me of trying to alienate his family from her even though I've made it clear that he and anyone in his family are welcome at my home anytime.

I should say that for thirty years my mother has lived next door to my oldest sibling, a sister who is very close to my brother. Now, that mom is staying with us we are the "evil people".

What in the world should I do? I'm afraid to call my brother because I think he will only yell at me. I have e-mailed, but have not gotten any response. I may have lost his relationship forever...this is how I feel.