Fortunately it is being investigated by the powers that be. Director of SA Zoo informed me they are investigating so hopefully they will end their association with them. Also, please note HTWT in their response made no attempt to deny electrical device, etc. They only state "We are unwavering in our commitment to elephants. We stand by our care and training methods."
accreditation standards 2011 edition
5. Behavior management
5.1. Training
5.1.1. Electrical devices designed for use on livestock, such as commercially manufactured electric prods and shocking collars/belts, are prohibited as routine training tools or for handling animals during exhibition. Electric prods are permissible only as an emergency safety device; however, their use is restricted to situations in which keepers feel the imminent need to defend themselves against elephant attacks, or to protect an elephant from possible injury (see Schanberger et al. 2001).
The AZA considers the following training tools/techniques to be inappropriate for use at member institutions:
a. Insertion of any implement into any bodily orifice, unless directed by a veterinarian specifically in connection with training for a medical or reproductive procedure.
b. Striking an elephant with anything more substantial than an ankus (a traditional training tool used by elephant trainers)
c. Striking an elephant with any sharp object, including the hook of an ankus (Fowler 1995).
d. Striking an elephant on or around any sensitive area, such as the eyes, mouth, ears, or genital region.
e. No tools used in training should be applied repeatedly and with such force that they cause
any physical harm to an animal (i.e., breaking of the skin, bleeding, bruising, etc.).
f. Withholding or reducing an animal’s daily-recommended amount of food and or water.
g. Withholding veterinary care for any reason.
If properly executed training procedures are ineffective in eliminating aggressive or inappropriate behavior in a given animal, institutions should consider other alternatives, including transfer to a facility with more experienced staff or a different management system. Protracted and repeated use of corporal discipline in training is of serious ethical concern and AZA considers abusive training practices to be unacceptable. Further, elephants that are untrained, unexercised, or unable to complete minimum behavioral requirements may be considered neglected and thereby abused.