Can't login to my admin acct

I changed home/.profile trying to add a variable for Oracle. Bash crashed when I tried to run the file and I couldn’t get a terminal with a prompt. Rebooting was a bad idea because now I can’t login to anything but the guest account.

Holding shift on reboot brings up the Novo Bootloader but all the options just load Ubuntu normally so I can’t get into recovery.

What sort of clever hacky things might I do from the guest account to fix my profile?

I did try to SSH into the normal account from the guest account but the connection is immediately terminated.

What can I do?