you have to undestand that stages of developement are build out of each other. any stage is the functional core of the next stage. it is therefore impossible to skip stages. role playing (conformism) is a stage in it self and it is most likely the highest stage that an autist can get a grasp of. it's probably where his developement is happening (if any is happening at all), not something that's wrong/not good enough, even if its retarded according to your and my "standards".
if you don't understand the internal workings of a higher stage (how it is constructed out of lower-stage-modules) you don't even have to begin to teach anything. and most likely it is futile to make such a teaching attempt anyway. if the individual has no hard intrinsic desire to learn, to become human, like lieutennant DATA, etc, he won't grow one bit, because the stage's functions can't be stacked on top of each other, if there is no identity, which identifies with them so that a sort of axis is built. a stage can't be grasped like a tool, a distal line of intelligence, like mathematics or geometry. in retrospect, it appears that earlyer stages can be grasped like tools, synthezised like a program, but while growing the stages in the first place it is different: you are identified with the stage that you are currently growing, meaning you can't even really see from the outside or from above how you are doing. so: someone at the role-playing stage believes, that he IS the role. and if he (the autist) does not even feel that way, than it indicates how his axis is broken at a level below role playing, so he certainly wont be able stack any further stages on top of it. (but again, if somone were at a much higher stage than role playing, the appearance might be similar, meaning: no identification with roles, roleplaying is treated like a tool, a distal line of intelligence)
verry abstract i know.
the matter is to complicated to be explained in more specific langage.