This "Variant" version of the standard Ultra Twister model uses a different turnaround system. In the more common model a track switching mechanism is used to move the car from a nearly horizontal track to one angling down at about 45 degrees. The result is the second half of the ride is traveled backwards.
In this variant a twist and dive type of inversion replaces this switch track and the entire ride is traveled in a forwards direction.
It isn't clear if this was produced this way originally or was a customization of an original version.