Within the Jiyushinkai we respect Ueshiba Morihei Sensei as one of the teachers in our lineage. We don't refer to him as O-sensei.
We don't put pictures in our kamiza. On a back wall of the dojo we have pictures of the respected teachers in our history.
For the answer to the original question, look in the book "Best Aikido" in the answers to questions section. There's a very strong definitive statement about this. It should leave no doubt as to the "official" answer from the Ueshiba family.