For one, Dugan didn't just say we planned to target Saddam Hussein, but also his family and even his mistress.
Dugan was only CSAF for 79 days so he really didn't have time to do much damage (other than to himself!), but he had been warned by Dick Chaney to keep his pie hole shut has in the past he had blabbed more than he should have. Cheney said that Dugan showed "poor judgment at a sensitive time" adding, "We never talk about the targeting of specific individuals who are officials of other governments. Taking such action might be a violation of the standing presidential executive order 'banning assassinations.'"
But the worst part of the entire situation was Dugan's replacement (spit), who was more concerned that we all look like airline pilots...