I. Love. It.
When I worked in printing, I concluded that you had your "mechanical" tpyos (letters in the wrong order, 6's instead of 7's, and the like), and then you had your "Freudian" tpyos.
Setting some kind of offcial newsletter for St. Michael's College, U of T (of all places), I was given copy that read "OSAP is a program that helps students in financial need," but to my embarrassment rendered it, in the first draft, as "OSAP is a program that keeps students in financial need." Totally unintentional.
Assuming this Lieberman thing, too, was unintentional, I'd slot it in the "Freudian" category.