Thanks for that excellent video Punkalouver.. A good demonstration on how Russian general aviation was regulated in 2017.
Banking 60 degrees just below Vne on a cable driven aircraft would need quite some muscles and , from what the description is , the cables might just slide on the pulleys , and the forces on the control surfaces keep stuck on the last input . I experienced that on a Super Cub when I was younger and more stupid, Not a pretty feeling I can tell you.. ,.
I flew (briefly) the Ans 2 in Poland in the early 90s, very easy to fly , cannot really stall like a normal aircraft , more like parachuting down, and it can fly very slow (55Km/h) but one thing one should not do is fly fast. At least that was what the Polish FIs were telling us never to do. As to performing aerobatics like on this video, crazy to attempt from the start.....