I took his WC back, but in this situation (picks here and in Halle few minutes before) I think he/she shouldn't play anywhere this week
Didn't see you were warned already, only saw him/her on the WC list in the EL post (it's the only post I read when updating the WC list).
As for playing this week,
PAW Rules in its WC section don't say anything about it. I still think s/he can only play the tournament s/he has asked for a WC first.