Sad to say encountered a similar player, low level roulette, ifrit popped, said in party ah sweet nice and fast one.
The tank didn't want to tank well outright refused to tank in fact, they just ran up to ifrit, hit him once then ran off.
We had to wait to be able to kick which in that time he had got us killed several times due to keep pulling ifrit onto healer.
When we eventually managed to kick him, we thought you know what let's just try get this done,
So the monk tanked (bloody amazing job too) healer spam healed, and I dpsd
The tank wasn't even new as they had zenith wep/shield and the 100 armor set.