Oh, puh-leez. Putting words like this into Akin's mouth is disgusting and helps no one. Conservatives have a horrible record of attacking other conservatives who come under liberal attack. We should support our own, not throw landmines under their feet.
That's not what he said.
What he said (OK, not very clearly) was that in "legitimate" rape situations (we're talking "forcible") the woman's body can go into a subfertile "defensive" mode.
Which, awkward though it is, has the advantage of being true: anxiety and stress negatively impact fertility; fear and rage spike adrenalin. An adrenalin spike -- especially at the right phase just before ovulation --- can derail or at least delay ovulation.
It doesn't always happen, and (as with everything fertility-related) timing is everything. And it was dumb --- it showed regrettable unpreparedness ---for Akin to fumble into a vague remark about rare instances of physiological function that would later require paragraphs or pages of walkback and explanation.
However, it should "count" that Akin was actually right (that still counts, doesn't it? Isn't truth still a defense?); and it is crazy that one verbal ankle-turn causes the whole GOP apparat to turn on him with knife-blades quick and long.