So how many other BBWAA members "abstained" like Fay did? Not many, it would appear.
There were 569 ballots counted
in the 2013 tally.
I haven't been able to find how many ballots were sent out for 2013, so the next best thing is to compare with the total ballots in 2012
So, unless there was a major bump in membership during the year, it would appear that no more than a handful of members of the BBWAA chose not to vote like Fay.