His deviancy stems from his claims which have no basis and substance. If he was an excellent writer or refuter (not much evidence to suggest that he was) we are back to a Maududi type scenario.
So if Deobandees are willing to ignore Maulana Allah Yaar Khan Saheb (RA)'s primary deviancy in favour of his writing/refutation skills than lets give the same credit to Maulana Maududi (RA).