This interests me.
I have done a deliberate mid air CSC and restart with a P3 adv or Pro, it was an experiment. The video I saw on my phone was remarkably stable, so much so that I thought the drone fell in a flat spin. However when I looked at the DAT file the drone did wobble a fair bit so the gimbal obviously did a good job.
The point of my post is that the rigid props of the P3 were driven by the 'updraught' passing through them and I think their drag above the CoG of the drone helped stabilise the drone during its fall. The props on a mini are tiny in comparison and foldable and I think the big question is whether or not they are big enough to catch the wind and be driven and possibly (big question mark) keep the drone upright.
I have been experimenting with hand held 'mid-air' CSC's of the mini and then severely waggling it (stationary props obviously) during the attempted restart. Sometime the motors would restart and sometimes they would not, I suspect it comes down to the degree of tilt (in any direction) at the time of the attempted restart, too much tilt and they will not restart.
WooZie's drone apparently tumbled which doesn't look good for the prospects of a successful restart.
My next set of experiments will be to try and get a strong 'updraught' through the mini's props and see how they behave, maybe put it upside down in the down draught from a hovering P3 or do something with a leaf blower.
There is one other behaviour of the Mini that might be dangerous, it doesn'tseem to allow motor restarts below quite high battery percentages. (this is coming from someone who is a P3 flyer where I think the restart threshold is 10%)