Using temps to cure chytrid isn't 100%
http://www.conservationevidence.com/actions/770
I haven't seen anyone stating that salt baths can cure chytrid (or that they are that safe for frogs)...I doubt that this amount of salt does anything to kill bacteria or fungus....higher amounts of salt in a bath willl actually dehydrate the frog as it won't be isotonic.
Pedialyte bath is a better choice in a pinch as it will help with dehydration.
More specific to frogs, Frog's N Things sells amphibian ringer's that is a good for rehydrating frogs....they also sell calcium gluconate that is good to replenish calcium and glucose. They sell a frog first aid kit that is good to have around for emergencies that has several items (including these) in it.
http://www.frogsnthings.com/storefro...og/health.html
As mentioned earlier, itraconazole baths or lamisil (terbinafine) baths are more accepted treatments for chytrid.
That being said, the only way to really tell if your heat treatment was successful is to test for chytrid afterwards.
Also remember that the frogs can get reinfected by items that weren't treated / sterilized as well.
As these were WC and from a suspect vendor, definitely have the fecals done and swab for Chytrid and Rana....it will save you from alot of problems with this frog and the other frogs.
Glad to hear that the frog is doing better now.