The FEI moved to ban the practice following the release of video of Swedish dressage rider Patrik Kittel using rollkur during warm up at a competition in Denmark where the horse's tongue appeared to turn blue as a result of the manoeuvre.
Sjef Janssen, the Dutch national team dressage coach and spouse of Anky van Grunsven, both known for their use of Rollkur, stated that the Rollkur system Janssen created was "totally different" from the training techniques of Schulten-Baumer.