I didn't see the interview, so I'm holding out faint hope that Buchanan's remark was tongue-in-cheek, or some other tone or context not meant to be taken seriously -- but if he did join in on the tinfoil conspiracy theme around this non-incident, I'm ashamed to say I once was a staunch supporter and admirer of Buchanan's.
There was absolutely nothing tongue-in-cheek about Buchanan's statement.