I have found something that looks like what happened:
On my browser the technique begins at minute 00.44 and ends at 00.50
However there is a significant difference: the video ends with uke facing tori because tori, facing uke, seems to exert the pressure leftwise.
BTW I think you can notice in the end that uke's hand is trapped under tori's armpit. That's what happend, yet in my instance uke's hand was trapped there nearly since the beginning.
In my case I exerted my pressure rightwise, and it ended with uke showing me his back.
This is the closest I have been able to find on a video, till now. Not identical but maybe this gives an idea of what I meant by saying it seemed to me like an Ikkyo done with one arm only.