Is there anything the USMC can do to the man carrying the MC flag to indicate that that was an inappropriate conduct or use of the MC colors?

On the news, I saw someone with a Marine Corps flag at the insurrection at the Capitol. I know that the Ret AF Col that participated would likely have his pension revoked as punishment. But assuming the flagbearer was a Marine that did his 4 and got out, then completed the reserve requirement and isn't getting any disability payments; is there anything the USMC can do to him to indicate that that was an inappropriate conduct or use of the MC colors?