While I'd prefer the coins to not be dumped in one go but instead in increments(as to not dramatically flash crash the market), why should we stop Satoshi? It's his coins, from his own creation. He/she/they have every right to dump every single one of the bitcoins if Satoshi wants to. It's a free and open market.
I hope they do.

Convince him then. Best of luck.
Yo, satoshi, if you sell all of your coins, John McAfee will have to eat his own pp on cam in 1 year.

He also claims you are a like mexican guy or something a dark skinned guy. I am pretty sure you are two ladies. One from Canada, one from UK.