It didn't work. If someone grabs you and you prefer that he not do that, you have many options. If he lets go, you have no throw. You do not have to put him on the ground to achieve that purpose. On the other hand, if you purpose is to learn a technique, there are other considerations.
Some students are afraid of falling.
In Aikido there is no losing. We learn to give the appropriate attack and we learn to fall so that we can help others to learn. They will do the same for you. Winning means winning over the discord in yourself. Those who have a warped mind, a mind of discord, have been defeated from the beginning.