The NRA supported the FOPA, which was a good bill. They, and everyone else, were taken by surprise by the Hughes Amendment.
They seemed to have learned from it as well. The NRA successfully lobbied to kill the original Protection of Lawful Commerce in Arms Act (S. 1805) in 2004 after a renewal of the original AWB was added as a "poison pill". They subsequently lobbied successfully for a "clean" version which was passed (S. 397) and signed by President Bush in 2005.
Also, since Sen. Ried's bill, which is at this point pretty hollow, has no benefit for gun owners in it, I think the NRA would not hesitate to lobby to kill it if anti-gun amendments are added.