There is 2 ways will be happen:

1. They'll run an airdrop for token holders

2. Burn all unsold token

With the first way, I think it'll help price of token won't be dumped cause everyone will keep holding and wait to get airdrop.

With the 2nd way, it can help price of token increase a lot because of decreasing in total supply but sometime it can't and price of token keep falling after unsold token being burned.