RichA wrote:

Since they can determine using redshifts whether an
object is moving away or towards us, I don't suppose
they have any idea what "direction" the origin (big
bang point of origin) is? I guess it's something like
trying to see the curve of the Earth from sea level.
-Rich

The movement of galaxies should (mainly) be seen as an effect of the
universe in itself expanding, not as if the galaxies are moving away from
each other in a fixed space. This means that wherever you are in this
universe, galaxies will move away from you.
Conclusion would be that the point of origin is here, there and everywhere.
Or, there is no such point.

If you don't understand this, don't worry. No one really does