Seems to me he was removed right after the announcement that Doubled the allowable amount of Marijuiana grown at home. 
Regardless I see Walker as a 1 term Gov. He's taken thousands of dollars from Alaskan family's. Then he rehired his ex business partner at $275 per hour ! Oh yeah after Ex AG Richards came to Anchorage and decided to party with women other than his wife. 
Corruption runs deep here......