It's a great interview by the way. Enjoy!
http://www.afl.com.au/video/2018-05-18/rory-sloane-takes-the-46question-challenge
Thanks for the link.
In terms of your gait assessment, there are a few issues.
The most obvious one is there is no indication as to when the footage was taken and it’s possible it was done before the injury.
The more problematic issue is that it is impossible to assess gait when the limbs involved are obscured, and in this case the surfboard and camera angles limit this for most of the clip. It is only in the last few seconds after the all questions have been asked, where Rory can be observed from behind to take 3 steps before the clip ends. The views are inadequate, as there was no footage of Rory walking from the front where is legs were visible, and there were no additional movements made that that would potentially provoke the midfoot area. On that basis, from that video I don't think any reliable comment about his gait as it would pertain to his current injury can be made.