Driving a bicycle into someone at over 20k, knocking her onto the floor and killing her was likely to cause death though. You take your victims as you find them.
Well apart from someone being dead as a likely consequence, yes.
To my mind, what he did is no different to me going out driving at high speeds while knowing my car's brakes were fúcked and killing someone. Whether that's manslaughter or not I don't know, but it's certainly utterly reprehensible.
Perhaps it was one of those cool new-fangled push bikes with no brakes.