Have you looked into using wire supports to corral them?
I have some wild blackberries that continuously tries to take over one part of my yard, so I've been researching for ways to control them.
Last year, I "designated" an alley or row where they are allowed to stay, pushed some cheap garden border fencing on either side, and ruthlessly cut off any that dared to grow outside that area. This year, I'm going to put up a T-post on either end of the alley and put up wires on both sides to hold the canes in a more upright position. The pathways on both sides are going to be heavily mulched.
Last fall, I also planted 3 thornless cultivar (Triple Crown) plants, so eventually, these are going to take over and the thorny ones will be history (unless the wild berries taste significantly better.... we'll see.)