[Howlin]

did Black or anyone else offer any testimony or evidence concerning the blackmail by Rush's former maid?

This is the only thing I have seen about money and the maid:

He tried to kick his habit again at a New York hospital to no avail, she said, and piled up drug bills of $80,000.

In 2002, Wilma Cline said, a Palm Beach attorney showed up on her doorstep, gave her a check for $100,000 and made her sign a promissory note, but said the "loan" would never be collected. Four months later, in November, the attorney gave her a check for $100,000 and told her not to give Limbaugh any more pills.

The attorney also told her to hand over the computer retaining Limbaugh's e-mails, Wilma Cline said, but she took the hard drive from another computer and smashed it in front of him. Then the Clines sought legal help.

From this link

[Catspaw]

I believe Black may have inadvertently given the prosecutors more ammo to open up Rush's medical records. He said at the hearing that Rush was experiencing so much pain his docs thought he had bone cancer (not an exact quote). Prosecutors could use that argument to say, "we have to have the medical records open to verify those statements." It wasn't a smart move on Black's part.