It all seems quite plausible to me - if man can barefoot waterski, why cant a plane? as for all doing it at the same time - and of course I speak with no authority whatsoever - I'd have thought that once you get the wheels down (carefully) - you'll feel resistance and it shouldn't be much different than holding the tail up on a runway - or flying the length of the runway with one wheel on the ground - as no doubt most of us here have practiced - so it's not really any great feat to have lots of a/c doing it together.
Respect