No, it will just make them move as they did with Persistent Movement, but if blocked from moving towards their current target, they will attempt to move to a different relay station.
The PCMT is not necessary for citizens to function properly, and a lot of published holds actually don't use the token at all in citizen puzzles.
EDIT:
The PCMT makes citizens never give up on their current target if they're blocked by something they can't see (like a monster, or another citizen). Whether that's useful or not is up to you.
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[Last edited by Chaco at 08-21-2008 11:40 PM]