Burnie Clark, president of Seattle’s KCTS for 16 years, resigned abruptly Thursday, before publication of a Seattle Times series on problems at the station. The Times reported that KCTS owes $2.8 million in back payments to PBS and $229,000 in rent to the city. Eleven staffers were laid off and more than 20 may follow. The Seattle Post-Intelligencer said the station declined to renew the contract of production chief David Rabinovitch last week. Current reported earlier that KCTS had run deficits for six of the past seven years.