Yes, I believe "misremebered" is a bushism.
Human memory is funny thing, it is not permanent and changes over time. As George on Seinfeld said "It's not a lie if you believe it".
http://www.salon.com/2010/05/20/bushreagan/
Take George W. Bush, whose controversial service as a Texas Air National Guard pilot was shrouded in mystery, evidently because he wanted to conceal the basic facts of his privileged admission to the TANG and his strange departure from its ranks. In his 2000 campaign autobiography, ghosted by Karen Hughes, Bush claimed that after completing his training in the F-102 fighter plane, I continued flying with my unit for the next several years. That simple sentence was entirely untrue, according to records eventually released by the Bush campaign, which showed that he had never flown in uniform again after his suspension from active duty in August 1972 for failing to show up for a mandatory physical examination.
In the same book Bush also suggests that he tried to volunteer for service in Vietnam to relieve active duty pilots fighting the war. But, of course, the entire purpose of his privileged (and questionable) enlistment in the TANG was to avoid the Vietnam draft, as he hinted in a 1998 newspaper interview when he said: I dont want to play like I was somebody out there marching [to war] when I wasnt. It was either Canada or the service and I was headed into the service. Two years later, under the tutelage of Hughes, that momentary candor evaporated.
Yet Bushs self-serving revisions cannot compare with the fantastic recollections of the late Ronald Reagan, whose veneration by Republicans was never diminished by his bizarre utterances. In November 1983, he told Israeli Prime Minister Yitzhak Shamir during a White House visit that while serving in the U. S. Army film corps, his unit had shot footage of the Nazi concentration camps as they were liberated. He repeated the same tale to Nazi hunter Simon Wiesenthal and other witnesses. Reagan had indeed served in the Army and worked on morale-boosting movies for the War Department. But he had done so without ever leaving Hollywood for the entire duration of the war.
Bushs phony account of his Guard service seems to have been a calculated prevarication by someone who just didnt expect to be caught. Reagans false memory could be regarded in a more generous light, perhaps as a signal of his later dementia. (At FAIR, Jim Naureckas notes that the New York Times dismissed the Nazi camp fantasy as a flight of imagination