Well there's a scenario... but we have to analyse a bit.
ENCE - OG: OG wins (already happened)
Navi - Heroic: Heroic wins
G2 - Navi: Navi wins
Heroic - OG: OG wins
BIG - ENCE: BIG wins
Navi - 15
OG - 12 (Heroic: W, BIG: L, ENCE: W)
Heroic - 12 (OG: L, BIG: W, ENCE: L)
BIG - 12 (Heroic: L, OG: W, ENCE: W)
ENCE - 12 (Heroic: W, OG: L, BIG: L)
4 teams with 12 points and each has beaten at least one of other three. I don't think it is possible here to judge who's lower by comparing 1v1 matches. So in this case the RD factor comes in.
OG has the best RD and even higher in case of winning against Heroic.
Heroic's RD (9) is pretty close to ENCE's one (11). In our case Heroic has won against Navi but lost against OG so we may say the RD stays somewhere near 9.
BIG's RD is already better than ENCE's and goes even higher after their victory against ENCE.
ENCE's RD goes down after loss to BIG. So in that case it will very likely be lower than Heroic's one. Therefore ENCE has the lowest RD and takes 5th place.
The only problem here is BIG losing to GODSENT (which is happening right now) so we need to wait for the updated RD. But even with that the scenario is still possible.