My Professional License is for 3 years and runs from birthday to birthday. Mandatory education is now required for renewal. Perhaps, he just didn't fulfill any education requirement.
He could have just decided he didn’t want to pay the higher fee and/or take the classes. It may be common with Senators to do that since they know they will not be practicing law....just making it!!!!!!!!!
I did see the interesting note in a discussion of a case:
“Is it misleading for a lawyer to state that the lawyer is “admitted” or “licensed” in a jurisdiction when the lawyer is on “inactive status” in that jurisdiction without making any reference or disclosure concerning such status”