Symptoms have been loosely formed to gelatinous stool and poor growth rate in one frog (in my opinion, as these are my first White's). I'm not sure if the symptoms of the frog with head tilt is related, she was before now the healthiest and fattest of the four, but since the onset of the head tilt she's lost some weight. She's still going after the crickets, but unless she can hit them just right they will get away. Also she's expending a lot of energy whenever she loses her balance turning right as she falls and rolls over. One smart thing I've seen her do is walk along the wall while propping herself up with her right feet ON the wall so she's actually more level, but that doesn't work when in the middle of the tank. If you are thinking her symptoms could be Chytrid related please let me know (I read your post in email before I saw it here)...

Here is the reply back from the vet in OK who did the fecal test and prescribed the Flagyl: "P&G's Vet Checked ReptilesVery cute frogs! I've had a chance to look at your fecal sample. I have found coccidia on their floatation and nothing on their fecal smear." So no worms detected apparently, but the other nasties were there.