By supporting a liberal Democrat, Wolf is showing that he was in the race for something besides some deep seated conservative belief. I don't think that Orman will agree to this and it may be a good means of smoking him out as the Democrat he truly is. But, if he does agree I have doubts that he would keep his word. He could invent all sorts of excuses about how he was forced to reconsider given the egregious behavior of certain extremists, etc.
I make no statements regarding the character of Wolf nor his intentions regarding his candidacy. I simply am pointing out that if Orman agrees to caucus with the GOP, there’s no chance that the GOP will lose the Kansas seat.
He may well back out of any agreement. However, I think that may be contingent on some of the races in other states. I think he’s much more likely to renege if the split is 51-49 (counting Orman as a Republican) than if the split is 52-48 or 53-47 (or better). Being with the majority gives a senator a better position with more power than being with the minority. Even at 51-49, he might well wait until after 2016 to see who controls the White House and move over if the Dems win. It would be pretty unseemly to switch now and then switch again if the GOP wins. Even the low info voters might catch on to that.