Change Rhino Origin Possible?

No.
geometry is stored in world-coodinates.
(i am 99% sure)

move the geometry closer to the origin.
(maybe even better: ask the exporter to do this)
move it back to the initial position before export - further usage that requires this position.

store the translation with a simple line,
(move endpoint to endpoint)
or use
_namedCplanes
and
_RemapCplane

further info:

https://wiki.mcneel.com/rhino/farfromorigin

https://wiki.mcneel.com/rhino/faqtolerances