Glitching is allowed, being an asshat isn't
OK: hiding (e.g. in the hay)
NOT OK: hiding when last man standing (i.e. delaying)
OK: using a ladder to reach a roof that can't be reached normally
OK: camping unreachable places in the middle of the round
NOT OK: camping unreachable places when last group of men standing (i.e. delaying)
NOT OK: exploiting invisible barriers
NOT OK: going out of map bounds (if you can see unfinished parts of the map, then you should not be there)
NOT OK: ladderpulting
It's obvious the guy was a ninja, so he had some sort of dark arts on his side to keep flying like that.