Even a guy like satoshi could dump his 1mn coin stash in BTCC by buying 5-10 alts, and then buying BTCs.
You really are worried about this, aren't you?
No I'm not worried the least about satoshi moving his coins. He's not here to daytrade etc. I'm just saying how it could go down between BTC < alts > BTCC with alts as a vehicle, without even needing to pass through $$$.