No, the governor can’t do that. Only two-thirds vote of the Senate can expel McCain or declare his seat vacant. Period. All other claims are nonsense.
Captain Queeg isn’t leaving until they shovel dirt on his face and should be considered compromised and working with the enemy and not to be trusted.
Unless Trump removes Sessions and gets a new AG who is not bound by the idiotic Russian recusal and fires Mulehead, Trump will have to fire him. A new AG firing Mulehead would help Trump more politically.