So after reading the article can you use him to simply fly folks off the map??

In theory yes, in practice it'll be tough to engineer.

But for instance, if a Defender picks a 4k in a situation where it leaves him very close to the edge of the map, then BoShek forcing it to do either a 4 or 5 straight will leave it unable to stay on the board the following round or force it off right now.