No, I don't think that what was meant. Assuming he gets the nomination, those who want to support Romney and/or oppose Obama will ignore this as simply a bad choice of words.
Those who oppose and/or support Romney will decide that these words means exactly what you're claiming, no matter what else he says.
He's already clarified, but will people believe him? Some will, some won't, but out of all the people that hear it, how many of those are undecided swing voters?
Obama has his share of moments when he's said things that I'm sure he wished he hadn't. Zero pointed out one. The whole clinging to Gods & guns things were another. I have no doubt both of them will put their foot in their mouth more than a few times between now and the election.
That's not going to decide the election.