How do I completely remove a module from a system
From Wiki-UX.info
A kernel module should not be removed from a system by simply deleting it from the /usr/conf/mod directory. First unload the module, then uninstall the module, and finally remove the module, if strictly required from the /usr/conf/mod directory as follows:
1. Unload the module:
# kcmodule -s <mydrivername>=unused
2. Uninstall the module:
# kcmodule -s <mydrivername>=uninstall
3. Remove the module from the /usr/conf/mod file:
# rm -f /usr/conf/mod/<mydrivername>