I forgot the name of the operation just prior to Kursk, but then the German army retreated in the face of a large russian offensive, while mustering reserves at the flanks. Once the spearheads were extended the cut off the spearheads with a "sickle cut". Hitler's only contribution to that was un firing Guderian and letting him be. The disasters of Stanlingrad and Kursk which immediately preceeded and followed this operation were in contrast, with Hitler's heavy involvement.
I think it was General Manstein, for a few brief months he allowed Manstein to engage in a flexible defence. Once the front was stablised, operational planning for operation zitidel began. In the main part this was planned and proposed by German Staff head quaters, Guderian and Manstein opposed the operation as to obvious and a waste of resources.
In a famous minute from a HQ staff meeting
Guderian - My Furher why do you want to attack at all in the east this year?
Hitler - I know, my stomach flip flops anytime I think of it.
Hitlers main input to the planning and operation of Zitidel was to delay its start date until more tanks esp the newer Panters were avalible, since this build up was matched and exceeded by the Russians it provided no real benift.
There is an arguement that if the attack had gone ahead a month earlier (when it had been proposed) it would have succecced, but there is'ent much evidence of that.
Again this reeks of the Generals exonerating themselves by blaming everything on Hitler....
He made plenty of mistakes, but blame for this one deserves to be shared out evenly.
Tacticicly and Operationally Kursk was the nadir of German Generalship, it was also an operation proposed, planned and excuted by the German general staff,
professionals the lot of them. It showed no more imagination than the Allied battering ram tactics in the west, althought without the superiorty in tanks and air power which made there application in the west fesible.