I agree it was probably overkill on the part of the police and it's hard to feel sorry for them when they are under the impression the law doesn't apply to them
FTFY
Get off your high and mighty horse of justice. In many jurisdictions it's very easy to get your license revoked, and you won't necessarily know about it until it's too late (not saying it's necessarily the case here). There's also the fact of if he didn't admit to the police that he had driven himself there, there'd be reasonable doubt to say that someone else drove for him in his vehicle. He didn't have to tell the police anything. "You have the right to remain silent" applies even before you're placed under arrest.
In the case of not knowing about one's licence getting suspended/revoked, an anecdote that can be extrapolated into many other scenarios: I had a speeding ticket that I was using a lawyer to fight. At that point all communication between the parties goes through that Lawyer. He was handling it and was given multiple court continuances. Unfortunately, the bureaucracy that handled tickets in that county didn't log the continuances of trial and extend the date of the ticket to match, like they're supposed to. Next thing I know, I'm getting a letter that I'm in contempt of court and as a result my license was suspended. I received that notification letter 15 days after they applied the suspension, and luckily the route I traveled to and from work at that point is normally devoid of police forces. I notified my lawyer, who told me not to worry about it and if I ever run into a problem, tell the police nothing and call him straight away. He called the court and explained what the solicitor's bureaucracy had done, and provided the court with all the communication documentation between him and the Solicitor's office(telephone recordings of attempted contacts times and all associated letter correspondence). He wound up getting the contempt of court removed and was given a set firm date for the solicitor's office to make a settlement by or else the case would be summarily dismissed. Even after the solicitor dropped the ticket, it still took the bureaucracy 2 months to stop sending me contempt of court notices, which my lawyer accepted but reassured me that firm judgement was placed in my favor, providing me a copy of the letter of dismissal to keep in my car as an amendment to my license in case it was ever re-suspended due to the mishandling of the county. The letter of dismissal had the same case number as the suspension flag indicating that the license was reinstated by court order and the DMV was behind in their processing. Using the state's DMV site, I was able to confirm that through the ordeal, my license was suspended twice. As a safeguard I now check the status every month to make sure that the ghost of tickets past has truly stopped haunting me.
The point of that story was simply this: It's very easy to fall on the wrong side of the law even when you're following the letter of the law. Yes, I allegedly broke the law by speeding 12 miles above the posted limit. It was never confirmed in court, and I had GPS tracked and vehicle computer recorded evidence to the contrary on top of time discrepancy evidence (time on the ticket was three minutes after the time printed on my receipt from Burger King ten miles back on the road, which called the calibration of the radar in general into question). Officially, I've never broken the speeding law. However, it was during the course of legal procedure that I fell outside of the law, even though the entire fault of my suspended license lie on the bureaucracy alone for not following procedure. Of course, whose head rolls when the bureaucracy fucks up? Only the victims'.