Okay, here is the text, I'll paste in my question and then their reply:
"Customer (Ronald Hall) - 01/10/2010 10:19 AM
Okay, if you use Vengeful Parry to interrupt an attack, then move away, per
Vengefuls Parry description, do you *have* to slide the attacker adjacent
to you?
The Players Handbook says that with forced movement powers, you can choose
to move the target, choose not to move the target, or only move it part way."
and this was their reply:
"Response (Support Agent) - 01/10/2010 05:08 PM
Hello Ronald,
Yes, you must slide the target two squares to an adjacent to you."
I'm not very satisfied with this reply - its one of the shortest I've ever gotten from them. So I sent back a reply to their response, and I included the complete text from that section in the PH2, page 219/220:
"Many powers allow you and your allies to move or allow
you to move your enemies forcibly. If a power notes a
distance that you or an ally moves (for example, “you shift
2 squares”), the character allowed to move can decide
to move all, some, or none of that distance. Similarly, if a
power forcibly moves an enemy (for example, “you push
the target 3 squares”), you can decide to move the enemy
all, some, or none of that distance.
If a power notes the destination for your or an ally’s
move (for example, “a space adjacent to the target”), the
character allowed to move decides either to move to that
destination or not. You can’t move partway. Similarly, if a
power specifies where you force an enemy to move, you
decide either to move the enemy there or not."
I'm still awaiting their response.