Let them dump. If Bitcoin is a viable idea, it will survive. Bitcoin's survival depends on its utility, and market price of a coin mostly doesn't affect that. If bitcoin is useful, anyone trying to suppress the price will lose their shirt if they're insistent. If not, they're doing everyone a service.
If this is true, it should not matter if the "market" price of Bitcoin is .10 cents or $1000. People maybe confusing a bitcoin for a lottery ticket
Some price support exists based on non-speculative usage. BTC below this price is unsustainable for long unless usage contracts and unsustainable above it unless usage grows. We just don't have a better way of determining what this price should be than this market aproach, which invites speculation with its benefits and excesses.