[bug] force blast respects zone of control

When pushing another character thru an unoccupied zone of control square, the force blasted character stops as if it's difficult terrain.

wizard 'w' casts force blast at target '1' while ally 'a' stands as shown:

Code:

w 1 x x
. x a x
. x x x

result:

Code:

w x 1 x
. x a x
. x x x

expected result:

Code:

w x x 1
. x a x
. x x x

Force Blast is "Slide Back 2." At the least, the wiki should mention that unoccupied Zone of Control squares also stop the movement.