It will be enough if they wish to have an unusable coin with confirmations being processed at a practically unusable speed for at least 2 weeks, and than slow as molasses for another 2 weeks. It may take many months with more miners dropping off with fear before they reach equilibrium due to the retarget limits set in the current source code.
This is why I was offering some friendly advice for them to get ready to create their own hard fork and migrate it to a new github so they have a chance of surviving during the brutal transition they will witness.
You pulled this notion directly out of your ass, and you keep repeating it like that'll make it true. Do you think that if you mimic my confidence it will make up for your lack of understanding? And yeah, in order to prevent a hard-fork we're gonna make a hard fork.
Time to start over with a new account. Yours is dead.