One striker only requires three on defense. If you're worried about his attack, I would toss in a DMC too and give a blue arrow.
The counter tactics table suggests 3-5-2 flat or 3-5-2v (DMC-MC-MC-AML-AMR).
http://forum.topeleven.com/formation...ation-use.html
Personally, I would play down the flanks and go 3w-5-2v with blue arrow on the DMC and red arrows on the AML/AMR but my team is strong on the flanks. I would play 3w in the back so my AML/AMR wouldn't have to come back so much. I would go attacking, zonal, high press, normal tackling, offsides and no counter since your up with an away goal. The blue arrow on the DMC basically makes it an aggressive 4-4-2, which you already had a good result with. If I went up 1-0, I would switch to a 3-5-2 flat, red arrows ML/MR, blue arrow on an MC (that makes it like a 3-5-2v), normal or defensive, down the flanks, low press, normal tackling, counter on, offside off. And later on go more defensive/counter with something like a 3-2-3-2
But really it ALL depends on your personnel and what works best for your team. Play your best formation!