One thing I've found interesting about Richard Moore's not completely ruling out a 2010 Senate run while also making it sound very unlikely is that in interviews with both WRAL and the News&Observer he's made reference to how things might look 'a year from now.'
It's hard to imagine just deciding to run for the Senate in 2010 in November or December 2009. Usually a run would require a good deal more preparation than that, and indeed Moore's primary campaign against Bev Perdue was already getting pretty tense in early 2007, if not earlier.
But Pat McCrory's January entry showed that you can put together a viable statewide campaign in a short period of time. McCrory decided to run when it was clear that the Republican field wasn't inspiring anyone, and he was able to win the primary even in just four months because his opponents were so weak.
It seems highly unlikely, especially after the Democratic successes this year, that the Senate field wouldn't look a lot more formidable than the trio of clowns that were the Republican choices for Governor this time a year ago. But Moore's statements seem to leave the door open that if for some reason high profile Democrats passed on the Senate race and left a mediocre pool of potential contenders in their wake, he might come in at the last second like McCrory did and give his party a stronger contender.
I doubt it will play out that way, but there seems to be some element of that in how Moore is playing this.