NEW : Riders back on ground after being stuck for more than two hours . Comment: About 20 people were on the ride at Knotts Berry Farm , Cpl . About 20 people were stuck for more than two hours . Ride also malfunctioned on September 7 , CNN affiliate reports .
NEW : Riders back on ground after being stuck for more than two hours . Comment: About 20 people were stuck for more than two hours . Ride also malfunctioned on September 7 , CNN affiliate reports .