I lived in utah for four years and the that hospital is run by the lds church! go talk to the hospital admistrator and ask them what they can do for your brother as far as the payment goes! the church was good about just picking up the tab for people that didnt have insurance! They have programs in place for exactly this type of thing! my.02 worth ans yes WAS mormon at the time so im sure that the church will do something for you!!!
p.s. im sorr to hear about what your brother is going through!