Multilib Install Failure

Following the guide (http://www.slackware.com/~alien/multilib/) on a 15.0 system and after downloading the files and running "upgradepkg --reinstall --install-new *.t?z" it ended up failing with a bunch of:

dirname: /lib64/libc.so.6: version `GLIBC_2.34' not found (required by dirname)
cat: /lib64/libc.so.6: version `GLIBC_2.34' not found (required by cat)
/bin/bash: /lib64/libc.so.6: version `GLIBC_2.36' not found (required by /bin/bash)
/bin/bash: /lib64/libc.so.6: version `GLIBC_2.34' not found (required by /bin/bash)

Commands (cd still works!) fail with:

root@walnut:~# ls
ls: /lib64/libc.so.6: version `GLIBC_2.34' not found (required by ls)

ssh session is still active but since nothing will launch I'm guessing I'll need to boot from a rescue USB and run upgradepkg on the original glibc package?