r r r
I do not have access to English version of the report. From what I read in the posts,I consider the following. The pilot wanted to fly as slow as possible by flying at Valpha Max by holding the stick back. Alpha floor gets activated between Valpha prot and Valpha Max and if it was instantly disconnected before speed increase beyond Valpha prot then it will be
deactivated till the speed has increased beyond Alpha prot before dropping below again. He did not seem aware of this that is why he was surprised by the lack of alpha floor response and moved thrust levers manually. Now he was at alpha Max and idle thrust at 100ft.Considering the response time of the engine and for the speed to recover from back side of the curve descent from 100ft and ground contact seems possible.