I get on the arc for lulz sometimes... spamming "I'm defending the..."
It's more a question about to know where and when to jump but then it's pretty much reachable by anyone, me thinkz.
Is it worthy a ban? None of those spots in my book... For me it's not glitching.
Kick? Only if he is the last guy of the team and refuses to get down when out numbered properly. But then it's more about delaying and less about a non-reachable spot. But then there are the flags if they aren't buggy.
Certainly not worth the time to make a ban request about... that would take as much time as it takes the maps to change.
If an admin is present, it's a situational decision by the admin as described above.
Tho I am pretty sure there are new admins around where you might run in open doors with this.
Just my 2 cents...