If you did that, Gibon2, the aircraft would maintain a constant angle of attack which most likely will result in a phugoid where the aircraft will pitch up and down as the speed increases and decreases. As the stabilizer will likely have trimmed to maximum nose-up you will probably experience a divergent phugiod where the amplitude of the oscillation will be increasing. What your rate of descent will be when you hit the ground will be out of your control and depend entirely on where in the phugoid you are. The lower the rate of descent the higher you forward speed will be and vice versa.
But, before all that is happening you would have been climbing merrily away as the auto-thrust would have gone into alpha-floor mode causing the engines to produce go-around thrust. It is not enough to put the throttles to idle to prevent this from happening, you will have to disconnect the auto-thrust.
Good luck.