So, he's definitely moving his lips right before he drinks, but he also doesn't seem to be moving his lips before eating the banana. Assuming this hunch isn't completely crazy
, it's possible he made a ha'adama before getting on stage and ate something, knowing that in 4 minutes, he'd be eating a banana. But, he couldn't have assumed her drink would come into play, and therefore, had to make a shehakol. It's possible, but it does seem like a stretch.
It took a lot of searching to me to figure out how he does the card trick. I imagine it'll take even more to find out if he's Jewish, let alone frum!