At the same time, he lied about being allowed to call witnesses. As I recall, he wanted to pull down every member of the Obama Administration to embarass them during his trial. The Illinois Senate said no, only witnesses germane to the case would be allowed, and Blagojevich threw a hissy fit, going on all those aforementioned Talk Shows, claiming he wasn't allowed any witnesses at all.
From the Chicago Sun Times:
The rules do prohibit both House impeachment prosecutors and the governor’s lawyers from subpoenaing people who “could compromise the U.S. Attorney’s criminal investigation of Rod R. Blagojevich.” But none of the rules prohibit Blagojevich from presenting his side of the story, said Sen. Matt Murphy (R-Palatine), one of the people who drafted them.