Glad to see it appears to be getting a full rebuild, but I'd still expect for the worst, hope for the best.
For me, the staging of the Ultrasaur scene is just as bad as the general condition of the figure itself. The motion profile doesn't begin until the boat is well into the scene, where riders have seen several seconds of the Ultrasaur being completely static.
The easiest (and remarkably inexpensive) fix here would be to put a large rock in the water between the boat's path and the Ultrasaur's resting position. This would block the line of sight as boats enter - riders would only see the body and tail of the Ultrasaur, not the motionless head. Then, the Ultrasaur could rise into position, creating an actual "wow" moment instead of "oh, huh" awkwardness.