The Ghost Next Door (2) - S4-E4
Revealing mistake: In the montage of important scenes from part one at the start of the episode, when Danny Anderson falls into the bunch of garbage cans, the mask on the stuntman's face becomes undone and reveals him. (00:22:20)
Answer: He repeatedly warns him against using the universal remote for bad purposes. However, Seth, blinded by remote's abilities, completely ignores and disregards Tony's warnings and uses the remote when and how he pleases, which eventually turns against him.