Doug Fritz has resigned as CEO of Iowa Speedway, officials announced yesterday. They declined to comment on the reason other than saying Fritz will "pursue another opportunity on the East Coast." The resignation comes as The Des Moines Register reports that the speedway was behind on payments to five companies or individuals. Officials told the Register that they are in the process of refinancing the speedway, and said the bills will be paid. They also said Fritz's resignation had nothing to do with the lag in payments.