Yes it seems to be a myth, just like blitzkrieg, or polish cavalry charging tanks
http://operationbarbarossa.net/Myth-Busters/Mythbusters3.html
same goes for the Russians ramming their tanks or Prokhorovka being the largest tank battle of the war
http://www.uni.edu/~licari/citadel.htm
http://www.amazon.com/Demolishing-Myth-Prokhorovka-Operational-Narrative/dp/1906033897
David Glantz and others Russian historians point out that a lot of the Soviet myths relating to WW2 are being dispelled because the Stavka archives were partially released as the Russians do not have publicly objective seminars on battles like they do at the War College for instance. Sad thing is that after Glantz came out with Operation Mars, Zhukov's Greatest defeat they shut down the archives because he was being a supposed revisionist so who knows what else we are wrong about.
It's kinda like the skull that was supposedly Hitler's kept in Moscow with only photos released. When they finally got around to testing it they found out it was a woman
and don't even ask me what that means
I can't help but think that if a student who had access to those archives was tested on those battles and gave the historically correct answer they would fail the exam