This is not a solution to stall recovery. The inherent flaw in canards is that they will always stall before the wing, but a horizontal tail will not (due to downwash). That is why conventional aircraft use horizontal tails most of the time, even though it provides a negative lift, decreasing the efficiency of the craft. Forcing the vehicle to pitch down will not recover a stall, as you will often just pitch back and forth, unable to regain control using the canard.