Quote Originally Posted by Runiat
Please keep in mind: Exactly timed actions have been rumored to attract the attention of Warden. A key bound to 1 direction per character really is a lot safer.

Not likely anything bad will happen, but rather safe than sorry.
Warden scans your memory for running programs, and left over traces of previously run programs.

It will not notice a bunch of characters moving at the exact same time. It also only bans on confirmed programs, IE the IS bans, even if it DID detect your same movements they would do an investigation and just reaize you are multiboxing and leave you alone.