RPM -e for single architecture

[thomas at cs.wisc.edu (David Thompson)]

Hi All:

On architectures where multiple architectures for an RPM may be simultaneously 
installed (my example is x86_64), does anyone know the RPM magic to remove 
only one version?

For instance, if I have the x86_64 and i386 versions of an RPM installed, how 
I can specify to only remove the i386 version?

I have been unable to find a search phrase that turns up any useful 
information.

Thanks.

Dave Thompson
UW-Madison
(ftp|http|rsync)://mirror.cs.wisc.edu/pub/mirrors/linux/centos