I’m not sure there is a ‘not falling for it’ option here - they were basically screwed when they announced they wouldn’t consider (not wouldn’t vote for, but wouldn’t even consider) any nominee.
Politically, that was an incredibly asinine move, because now Obama floats the idea of nominating a moderate Republican, and they’re in a no-win situation:
If they agree to consider the nominee, they’re as good as admitting that the whole “no nominations in an election year” thing was bullshit partisanship, and lose whatever shreds of credibility they had left.
If they don’t, they sound like petulant children, who care more about blocking progress than taking the chance at a compromise that benefits them. Which makes it even easier to paint them as ‘the obstructionist do-nothing Congress’, come the election.
I’d like to say that this shows how brilliant Obama is, but honestly, he’s just doing his job - this is the Senate GOP resolutely tripping over their own feet. They could have said, “We will not consider a *radical liberal *nominee.”, or “We will only hold hearings on exceptionally qualified nominees”, and then stall and weasel around the definitions of those adjectives to reject anyone who came along. Fortunately (for those of us hoping for a Democratic-majority Senate next year), they instead chose to be idiots.