I doubt whether the situation is any different if it's a sane man who's run with the clothes.
In fact, there's no way of determining any one's sanity here.
So, I'd do the 'natural': call out after the man, and since the man would be bent on being as far away from me as possible, I'd call him a name and start improvising, and if all goes bad, I'd sprint home; and if home happens to be far, saunter with my new clothes.