You need to be 2 and you need something like a Shadowstep-Ability.
The first guy stands here:
http://imagr.eu/up/520cde4d16f14_pillar2.jpg
The second guy, who wants to get in the pillar needs to shadowstep the Guy ontop of it.
http://imagr.eu/up/520cde8239405_Pillar.jpg
This is the result.Hes in there.From there youre able to cap!
Getting on the pillar shouldnt be the problem.Its common sense and everyone can do that.Just look at the stuff around that.