Then what do you take this to mean? "Barr and other top advisers have argued against the hard-line position for some time, warning it could have major political implications if the comprehensive health care law appears in jeopardy as voters head to the polls in November." Sounds like he wants to change it to me.
Not wanting to change/scuttle it all at once is not the same thing as wanting to keep it in its entirety forever. There is also nothing to suggest he does not support parts of it being struck down by SCOTUS at this pleading.