the price is protected in the sense that there are not very many liquid coins available to be dumped on the market then if 100% of the coins were liquid and available for dumping. The peg doesn't affect price directly of course but influences supply to align better with demand... the peg just went live recently and the reserve markets really haven't' taken off yet, part of the reason is that there is a one month timelock on reserve coins that are deposited to the exchange, so many peoples reserve coins are not yet available for trading.