Huckabee's latest: Shrewd or Crude?

Digital Journal:
"Mike Huckabee recently called a press conference, in a room filled with negative posters about Mitt Romney, presumably to unveil a new ad campaign. Before the new ad was played however, Mr. Huckabee seemed to have a change of heart. He told reporters the ad would be pulled… but not before showing it to “every news outlet in the country,” according to Fox News"

Can this guy be trusted? The terms "snake in the grass" and "weasel" come to mind.