If anyone answered yes to this question, they should be looking for someone else to learn from.
There should be no end to your aikido learning whether that is through technique or through study of the other basic principles of Aikido.
My Sempai was shot and paralized less than one year ago. He's started teaching again on a regular basis, and I feel that he is stronger in his Aikido that he was before he was shot. While his physical body is not capable of doing the Aikido techniques, he is now able to focus on the mental and spiritual side of Aikido. He's had a lot of time to look at himself and analyze what got him into the situation he's currently in and learn from the experience.