bearfoil, most of the debris is pretty random. There is a good chance that the heavy stuff (engines and maybe APU) dissipated its horizontal velocity component fairly quickly in water. So they will fall fairly straight down with little dispersion from current or anything else.
If that is true, the Northerly outlier is the APU, AND the plane hit tail first then left wing, then we MIGHT be able to say the plane was heading more or less SSE to SE. That's a lot of ifs. So as noted I'm sticking to relatively random debris field modified by underseas currents as most likely. But I am putting in my one cent's worth that AF 447 may have been heading generally SE-ish.