Aceeds plan of action then:
Tie rope round the basin thing (presuming it's pretty secure), tie a loop on the other end and toss the rest of the rope at the whirlwind in the hopes it will snare thak and drag him out the hard way, whilst staying away from the whirlwind as much as possible.
Other than that I'm moving away from it then (I'll pick a corner of the room (northwest one near the door)
[/ooc who's for trying to circle round to the north and coming in to the pit room from the north door ?]