Yes, if not gleeful, definitely admiring of Roth. And yes, he did let Michael down massively. "Our people with the New York detective squad..." If they were "our people," why weren't you on top of the Pentangeli survival and arrest? Duh-h-h, Tom!

"You've opened yourself up to five counts of perjury.," he tells Michael, as if Tom had nothing to do with it, after advising his client to take the Fifth before he testified. If I were psychologizing, I'd almost be tempted to say that Tom, after taking all that abuse from Michael, was taking satisfaction from Michael's predicament.