Not sure if this is a long-standing problem at Splash or not, as I haven't ridden much in recent months, but all the robotics were turned off on Jan. 22 (both at 5pm and again at 8pm). The boat itself is rocking, but the characters on it are frozen. See for yourself:
Splash Mountain broken animatronics 1/22/12 - YouTube
Surely there's a point at which 'enough' robotics break that they'd turn the ride off, right?