This is apparently an oldie, but a recent comment by Wax Eagle brought me here. How about a revival?
Here's how I read it:
Stand Your Ground:
When an effect forces you to move — through a pull, a push, or a slide — you can move 1 square less than the effect specifies. This means an effect that normally pulls, pushes, or slides a target 1 square does not force you to move unless you want to.
Rules Compendium, pg 212:
When a distance is specified, it is a maximum; the creature or effect producing the forced movement can move its target up to that number of squares (or none at all). For instance, a character's power might say, "You slide the target 4 squares (or "up to 4 squares"); both mean the character can move the target up to 4 squares or not move it at all. When a destination is specified, it is absolute; the creature or effect must either move the target to that destination or not move it at all.
WRT a Dwarf 1 square away:
"Stand Your Ground" ability states that, "You can move 1 square less than the effect specifies". Also, "pull 2" allows me to move the the target up to 2 squares. Moving the dwarf 1 square is both "up to 2 squares" and also "1 less than the power specifies".
What I think is key here is that nowhere do I find that it requires that the "forced mover" specify the number of squares they will move the target at the time of moving them. Rather, the rules clearly state it's a maximum distance that may be moved in whole or in part. The mover simply declares they pull the Dwarf 2 squares and proceed to move it only 1, with or without the Dwarf's objection to the extra square of movement remaining.
WRT a Dwarf 2 squares away:
From Come and Get It
Hit: You pull the target up to 2 squares, but only if it can end the pull adjacent to you. If the target is adjacent to you after the pull, it takes 1[W] damage.
The destination is specified, "adjacent to you". The effect either moves the target to the destination, or does not move it at all. Given that the Dwarf 2 squares away can prevent the target destination from being reached, it therefore prevents the movement from happening at all. IMO, for this scenario the power would have been better served to have read, "You pull the target 2 squares to a square adjacent to you. Targets moved adjacent to you in this manner take 1[W] damage."