The writer says he agrees with "98% of the content of the deposit of the faith” that is held by Roman Catholicism. In other words, there is only 2% of Roman Catholic doctrine he disagrees with. Since he choses to remain in the ECUSA, he must have a 99 – 100% level of agreement with the current policies and theology of ECUSA. Given what he says elsewhere on his blog, that is hard to believe.
Not necessarily. ECUSA is not homogenous -- and Randall Foster is located in one of the (about) three, um, "orthodox" diocese left.
It seems to me that if he cannot accept Rome, that he should go to the Orthodox Churches, since he seems to have more in common with them than with the ECUSA--that is, if he cannot find some way of organizing an Anglican Church in the United States apart from the ECUSA.