I think there's a few different ways:
If there's a zone border, like a wall, you could just make it an attack. The weapon value of the attack represents the damage the ghoul takes when he hits the wall. If the ghoul takes a consequences and/or if the damage is greater than the border value, you can tag the consequence to invoke for effect, making the ghoul fly through the wall into another zone. The ghoul would get a FP.
The other option is to set up a maneuver, "blasted by force" opposed by athletics (or maybe the ghoul could choose Might, if he finds something to grab on to. Tag for effect and the ghoul gets a FP and is blown x amount of zones, probably based on how powerful the maneuver was. If there's a zone border, there might be damage given to the ghoul as well.
Exact details for the power of a maneuver, I wouldn't know. I've seen this topic come up a few times and people have had some good suggestions. Maybe a base of 3 shifts to move him 1 zone, then 1 zone/ shift of failure? That seems cheap, though. I think a zone border would eat up shifts, personally.
So if you want to blast them through a border 5 wall, you need to do at least a Power 5 maneuver to move them 1 zone. Shifts of failure will get you through the next border, but the shifts of failure have to be greater than the next zone border value...so say it's another border 5 wall, they'd have to fail by 5 shifts to move 2 zones, and it'd have to be a Power 10 maneuver. I'm kinda making this up on the spot, so I'm sure someone will disagree with me and come up with a better way of doing it.
In any case, to summerize: I think a maneuver is the way to go, or an attack that delivers a consequence that you can tag for effect.