That happened just as he was in a tense standoff with his daughter and the Royals because he'd staged pics of himself getting ready for the wedding -- and some people accused him of faking the medical crisis for sympathy. He never ended up going to the wedding, after all.
It's unclear what Thomas' condition is right now, but one of his close friends says he remains hospitalized.
Markle had recently said he would be attending Queen Elizabeth's Jubilee celebrations in June. Looks like he might have to cancel yet another UK trip.