Few beers did this to him, he always sucked when he had to talk in front of camera and now he was all relaxed and gave decent interview. So my guess is booze and braces.
That doesn't sound like Winky at all, he probably has a sore throat or something, it's nothing close to being punchy.
Yeah, that could be it. Doesn't sound punchy at all, if he was punchy you wouldn't understand most of what he said or he would be stuttering a lot, he was talking normal there.