I wonder if Grodner got enough enjoyment from keying a deploying Marine's car to make up for this. Grodner is petty, stupid and has undetectable impulse control. Having demonstrated that so publicly probably destroyed his practice. Even if you agree with his politics and hatred of the military, you sure wouldn't want him to be your lawyer.
While there is no indication given publicly as to why Grodner would decline to reregister, one consequence of doing so would be to avoid disciplinary actions.RTWT