I'd think more like adding this drug on a trial basis to other treatments, especially when the other treatments are not known to work very well, or offering it in cases where the patient simply does not want the other treatments due to side effects.
Sure, why not.
I tried briefly to locate a source of DCA on the Internet, to see what restrictions were applied to its sale. I didn't come up with much, but one guy said that the drug could be purchased without a prescription by businesses. Some docs are sure to be be willing to write prescriptions for it to those in need, after the patients sign the appropriate consent forms.
I'm sure that given the press it has received, there is now a substantial black market for the drug. Also, I bet that DCA, or something labeled as DCA, is now flying off the shelves of Mexican pharmacies.