Delay/TRMPAC criminal case: who is the mystery republican?

http://www.austinchronicle.com/issues/dispatch/2005-05-20/pols_naked3.html

as reported in the media,

A standoff between the Texas Ethics Commission and Travis Co. prosecutors ended last week with attorneys brokering an agreement out of earshot of the courtroom where they had been expected to present arguments in the dispute. The impasse had centered on the commission's refusal to turn over confidential information to District Attorney Ronnie Earle in connection with his probe into possible campaign finance violations during the 2002 legislative races.

The DA's office had sought the identity of a person who, in 1998, requested an Ethics Commission opinion on whether corporations could contribute to political action committees without filing disclosure reports with the state - then withdrew the request after learning that corporations are prohibited from giving money to PACs that they didn't help create.

who could it have been? whoever it was if they act on behalf of trmpac it will make their life hell trying to argue in court that they didnt know what they were doing is a crime?  Any clues on who the mystery republican is?  could it have been tom delay himself?