Well OK because her team won last week but on the health spa task she was sucking up to Zoe much more than Vincent was to Jim last night (remember the confrontation with Susan where Helen stood next to Zoe backing up her bullying).
The point is that Helen sucks up to whoever is PM. Vince, on the other hand, sought Jim's approval for everything he did when he was supposed to be PM. In a way, he made Jim the de facto PM.
Whether you believe their conclusions are fair, their reasoning is sound.
When Zoe and Helen were creasing up and losing it laughing at what Leon was saying and then again when Glen was having a hissy fit on the other end of the phone - it had me in hysterics too - I thought it was hilarious. I really like Zoe.
I think sucking up and siding with are slightly different and it seemed more like the latter with Helen on the spa task. I think they were probably joint in their purpose to give Susan a telling off in the shopping centre right at that precise moment in time whereas Vincent was sucking up to Jim for the whole task.