Paula Froelich reports in NewsNation.GSM&S recently dumped Diddy because a bigger name client — Lady Gaga — gave the legal eagles an ultimatum.“Lady Gaga said she was leaving [the firm] if they didn’t drop Diddy. And she’s too big to lose,” the insider said.No “Poker Face” here!Not wanting to risk a “Bad Romance,” it was Done Diddy.Combs was the law firm’s client for more than 20 years.