“To have it “stripped” is actually a big deal.”
He clearly can’t do his counterintelligence job anymore.
That is probably why he was escorted out of the FBI building last Friday. No other details in this article about what else might be going on with him - if he is being fired, investigated or indicted; for example.
They could have pulled his clearance based on the IG report, or there might be a lot more going on that is not public yet.
It’s not like even with a clearance you can walk in and see everything do anything.