Wow, sorry to hear about the lockout![&o]

I was buddy-boxing with a guy at my local club last year with one of those electric T34 trainers and had a similar thing happen. I felt bad about it but there was nothing either of us could have done because it just plain quit responding. This was a well set up model and the battery was relatively new and had plenty of charge left. Made a very impressive divot in a local ball field. I guess it happened before because Horizon replaced the entire model including battery.

A couple years back I spent the winter completely refurbishing a Venus II and lost it to a mid-air on the 12th flight after the project. So I have some idea how frustrating it is!