Yes, that game between LSV and Froelich was amazing. Unrestricted Mentor was simply nuts. And combine that with unrestricted Gush (and unrestricted Probe when that was the case), and you probably had one of the best decks ever... Right?
These unrestricted Mentor matches reminds me of Kevin Cron's and yours 2016 Vintage Champs Paradoxical Mentor deck which was one of the most awesome and fun decks I've played. It's funny, I kinda miss unrestricted Mentor even though the card is utterly nuts and should never have been printed.