I read on the BBC (via Mirror) that Kenwirght had called a meeting. I also head the same thing a week or two earlier, so I have no idea how true it is. Maybe it'll happen, maybe it wont (as far as I read in the paper, Moshiri is out of the country til Monday). If Rafael is still here next week, I'm sure "journalists" (lose term) will be saying more meetings are planned/called.
I have zero knowledge as to whose decision it was to sack Silva, be it individual or collective, but I have a hard time seeing Brands being sacked. He's Moshiri's man. Moshiri put him on the board (how many other DOFs can say that), gave him a pay-rise/new contract and has wasted a lot of his money, as best we can tell from who did what transfer - which may be guess work. Unless Moshiri pulls rank as majority shareholder, wouldn't Brands have to vote on his own sacking?!?! Only at Everton could that happen.
Right now, I think Brands and Kenwright are safe - hell, Moshiri put them there, and Rafael is just a "football manager". He's sacked a few before, Rafael wont be the last. My guess is Rafael's contract is in line with most Prem managers, so compensation will probably be minimum amount (whether that's 1 year 1 payment, or monthly as per normal until other employment is taken).
Just my personal opinion, can't claim to know what will happen, other than this is a results business and a £500m investment ending up in the second tier must surely be unthinkable for Moshiri.