I don’t think I ever heard that story about the river, if I did I forgot. Articles I can find say Roy helped save a fisherman who’d been bitten on the behind by an anaconda. Carpenter and BJ Ryan where also there but no mention of them helping.
Whatever happened I’d wager probably has nothing to do with their poor pitching. Both of them have a history of injuries and are getting up there in age. The human arm wasn’t designed for throwing a baseball. Halladay had heat exhaustion trouble during the 2011 season, prior to the the trip.
If Halladay does have some kind of parasite that’s gone undiagnosed, that would sure be weird. Yuck, the mere thought of say intestinal worms, is very disturbing.
Maybe he can do a Jamie Moyer or Gaylord Perry but for a bull of a man he looked pretty sick his last start beyond what his arm couldn't do.