EA transponder 12428 @ 72 satellite is home to both ch 172 and 493 but on different V pids 5922 & 4162, with Hopper if you block the signal at your dish or disconnect the cable to mimic a signal loss event you may find your receiver acts in a similar way. Since I have neither hopper or EA I couldn't test the theory.
I think we have our answer. 493 USED to be on 72.7, TP 15, where 172 (the channel she recorded) is. This uplink from a week ago shows it was moved, I'm guessing in response to this incident.
http://www.satelliteguys.us/threads/292002-9-12-2012-1-17am-Uplink-Activity-Report-1-change
So the hopper has a bug that makes it grab the wring video PIDs far a particular channel. Wonder if there are any more 480-499 range channels that share TP space with kids channels.
For those saying it was an accidental PPV purchase, I think Dish would have pointed it out. For those saying it wouldn't decode it, why not, if the receiver thought it was tuning Disney? PPV gets no special encryption in the stream.