Dan,

I consider myself a pretty intelligent guy, but I may be a little obtuse here as well. Could you please direct me to the verbage where G-Man states that he brought 4 members of his family, and they each retained their posession limit? My limited comprehension skills led me to interpret this:
And this:
to be somewhat ambiguous at best.

Left to open interpretation, it would appear that G-Man kept more than his limit during his trip.

I consider you a very intelligent individual. You must be even more so than I gave you credit, for your ability to discern the actual truth from the limited amount of information that G-Man provided.