WTF? 
My first reaction to that is to be horrified.
I think this is an attempt to deal with the problem that it is political suicide for any US president to release money to Afghanistan (Afghanistan's own reserves, or aid money), because this will immediately be described by political opponents as "funding the Taliban" – with some justification.
Meanwhile clearly Afghans need the funds for humanitarian reasons.
I've been wondering for months how that deadlock would be broken.
I think this move is intended to square the circle. But politically I really doubt it's going to work: it's more likely to piss everyone off, rather than just some people.
And practically it's not clear it will work either. I can't read all of that FP article, but it looks like it might cause practical problems of delaying funds.
So I think horrified is also my second reaction.
Of course I also don't have anything more constructive to suggest. I can see the bind; I can't see a solution. Like the whole occupation in the first place.