In my experience, many people of character follow a "bright line" approach to issues of potential self interest when they are in situations where they have role obligations to others. They stay well away from a clearly visible line between proper action and self dealing. That not only protects their own credibility, which they can then use for continued positive, fair leadership, it also keeps others from falling into cynicism, which when widely held is a huge enabler of self dealing in any system.
That's why judges and sometimes politicians recuse themselves from deciding issues which directly affect them. Many people of character apply the same approach informally in their daily lives. And it often does mean handicapping their own interests a little bit.
So yeah, I think Osborne is likely to at a minimum going to soft pedal any support he has for Nebraska.
The good news is that others on the committee will realize that. When someone acts with high character it often leads others around them to respond in kind. So they may well sub-consciously over compensate and favor Nebraska as a result.
Self dealing occurs everywhere of course, but this New York writer lives in a place where it is so commonplace it's hard for him to comprehend someone actually acting like T.O. consistently does. Almost everyone there has given over to cynicsm, unfortunately realistically so. There are a great many high character individuals there of course, they just aren't so readily believed or even understood.
All this is just my opinion. I've never tried any of it.