Copter 4.03 crashed on its way home (RTH)

ArduCopter Copter 4.0
1

Looking at the LOGs I have not been able to find the reason. All the flight maneuvers before were successful. Any LOG-guru around here? https://send.firefox.com/download/f5870f1cf3d0df56/#ZEjmbsWA5fWcxZDXBEa5KA

2

Your link has expired

3

Ups, I am sorry. Here the new link: https://send.firefox.com/download/e388b321a67293d7/#3mnjxdSgAILuRlJIW3O7jA

4

Not sure what this is all about but it looks very weird:

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You have enough vibrations that you have clipping going on

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