On most modern Mac OS installations, this is a non-issue. System Integrity Protection doesn't honor any changes to LD_LIBRARY_PATH, presumably for exactly this sort of reason. (Of course, one might have turned off SIP, in which case this is no longer true, but it's nice to know it's the default).
Very sensible. I wish OS X featured a even more "rootless" mode where "root" only gives you sandboxed write access, and read access to files it creates.
