Re: I don't think this is the spirit of Tintin's gaily colored moon rocket
It has to come down fast because it can't hover.
The throttle only goes as low as ~1.8G, so the least it can do is roughly maximum braking of a high-performance car. (0.8G)
Lower throttle isn't possible because turbopumps don't do slow, among other things.
According to Scott Manley, it's trying to drive at a brick wall at 120mph, then slam on the brakes and come to a halt just touching the wall.
This time it slammed on the brakes ever so slightly too late.