You reminded me of another incident where my party had to kick someone. I was running Dusk Vigil with a friend who was leveling a new tank, myself as healer, and another friend as dps. The fourth party member was dogging me to dps despite the fact that the tank was undergeared (and either a warrior or dark knight, he was squishy af). Even though I explained that a focus on dps would possibly end in wipes and I wanted to focus on support, he still bugged me until halfway through the dungeon, he says "Well it's too bad you can't kick me, I'm going to bug you the whole dungeon." Well, guess what?