Map exploit - Infection / maligant

Well, yesterday I’ve seen a player exploiting the map and getting out of the playable zone to avoid getting killed.
Count me lucky, today I’ve seen another one!
This time it was BoxyPandora50 and some other Fotus-helmeted guy, but that Pandora did it for the whole match.

Here, hope it’ll get fixed soon - I tried to follow them, then as Infected - couldn’t do it.

http://xboxdvr.com/gamer/CommanderPaImer/video/ed7be1c3-b217-476d-9f21-f5aaf3490de5/1370999b-fca2-4c53-8ec5-73493bcb67e5

That spot is very risky and difficult to get to.