Not 4909 dollars anymore, now it's 8063 dollars. I think the effects of a intense pump are very diversified. Some gamblers will just adjust their bets down, to not spend much money fast, others will stop gambling until the market finds a balance point, there are those who change to stable altcoins temporarily and I believe there are even gamblers who will increase their bets, to try earning btc fast now to cashout during the pump peak.
There will also be a bunch of gamblers, who after finding that the value of their coins have increased, would go for additional amounts. For example, someone was planning to gamble for
BTC0.10 ($320 in March) earlier. Now the worth of those coins have increased to $800, and he may decide to gamble away the entire amount. You will be able to find such people here itself.