Dotticom, could you expand a bit on that?
Flap limit speed for Flap 7 and 15 is 200 KIAS, and for Flap 35 it's 175 KIAS. Is it that there's this restriction for retraction of Flap 35 above 200 KIAS?
In terms of certification, that would be operation out of limits in any case, to be over 175 KIAS with Flap 35. Observing operating limits would prevent this uncontrollable pitch-down.
On the other hand, to exceed 200 KIAS with Flap 7 or 15 ... I doubt that the aircraft would be uncontrollable with flap retraction only slightly above that limit speed. I cannot see it being certificated with such flight characteristics.
So, what's the deal?
Anyway, from what the video shows, it looks more like the pilot let the aircraft get away from him, perhaps trying to stay visual on a circling approach. It's banked over rather steeply in the video, what looks like 90º.