If you get lucky, then will just be bedded in and can be dug out with a bit of graft. If you're unlucky, then it'll be concreted in and there's a massive ball of it underground. Most of ours were just beded in and came straight out. The corner post (with a 45 degree angled supporting post) is completely concreted in. I'm contemplating leaving that one in and just working around it. Good luck