I saw the exact same thing! But was in the middle of a move and didn't have my own internet set up and was paranoid about using public wifi. I did manage to get my BTC to a hardware wallet before the deadline which made me feel good but it looks like Coinbase is reassuring everyone that the bit coin cash associated with their private keys will remain in the custody of the customer. I'm super excited about this decentralized ledger ecosystem, the sky's the limit!!