[fnordfnordfnord]

>Effectively it means anyone cancelling an order has to worry

No, it really doesn't. This is a single enforcement action that probably took months or years to put together. The behavior being policed is traders entering thousands of orders in a short period of time and then cancelling the orders after their real orders were filled, and then repeating this behavior over some period of time. Someone who fat fingers an order occasionally, or changes their strategy in response to intraday market movements has nothing to fear.

>For me real manipulation

Yeah those people also suck and I hope they get what's coming to them, even though I know they won't.