You did not say if you had a Gyro in the Velox. If there is a gyro, the Gyro could be acting up.

You do not need telemetry to check the flight log.All you need is a Flight Log Reader and plug it in before the power to the Rxer is turned off. Or you should be able to get the GSU out and read the log on the turbine to see if there was a potential failsafe.

If there is any question about the Txer or Hardware, send it in to HH. They never charge anyway. For the cost of shipping you get a double check and tuneup.