What can we do to open our grandmother’s probate?

My grandmother had (2) children my dad and aunt; my dad passed (7) years ago, he had (5) children (the only heirs) and my aunt never married and no children. My aunt recently passed 2/2013. Neither my aunt nor grandmother had a will or trust. My aunt had several hundreds of thousands of dollars in her bank account (because she often boosted about it, and often said that she did not need insurance because she had enough in the bank to bury her and my grandmother), my aunt had an insurance with the state of S.C. that my grandmother was the beneficiary to from teaching over 40 yrs and (5) properties between them (2) of which were rental properties. My other brother (R) lived with my aunt and grandmother for (9) yrs up until the passing of my grandmother and still have his cloths over there but my brother (T) cut off the utilities. My youngest brother (T) became my 94 yr old grandmothers "Executor". He (T) established a joint bank account with my grandmother and lied to the probate judge that my aunt did not have a bank account. To make a long story short, my grandmother recently passed 9/2013. Our youngest brother (T) have not spoken to us since the passing of our aunt, we fear that he (T) put the rental income, my grandmothers social security checks, money that my grandmother already had, my aunts bank acct along with the insurance payout check by tricking my grandmother to sign it all in this joint account that he (T) had with my grandmother. The probate for my aunt according to my calculation should end in 12/2013. Me and my siblings are on hard times (unemployed, dialysis patient, temporary employ) and cannot afford an attorney to fight our brother (T). We fear that we cannot recover any of the money in the bank acct. If we cannot open the probate for our grandmother due to our brother (T) wicked act of "greed for money" and simply not communicating with us at all because he knows what he is doing is wrong. What will become of the (5) properties?