Lots of things don't make sense after the event. I'm just relaying what I was told by people who were there.
When I asked Sonny Sanders about him joining Correc-tone, he said he had quit Motown. I told him that didn't seem quite right due to the recording of 'Jamie' - which he did the string arrangement for - and the first 45s on Correc-tone. There was clearly an overlap, but he seemed to be offended and was adamant he didn't work at both at the same time. That didn't make sense to me.