if this rumour happened, the consumer of bitcoin will go wild to buy anything that can be afford with remain bitcoin
or sell it at very low price to lessen the loss. and all vendor of bitcoin goods will stop the transaction immediately
Selling at low price is selling for a loss, if no one will use then it's useless to buy bitcoins. I think it will not happen because of the strong support of bitcoin, it's still a great value now.
Yes. The support is being the pillar for bitcoin's existence and its huge growth. I am sure the growth is going to be big. There wont be any chance for disappearing. But if it happens, this would happen when none works towards it. The market value is growing day by day and its usage also have become more important as its value has come up. Lets support BTC as we already do.