Totally possible, I don't know about TOOLED, but it isn't outside of the realm of possibility.
IMO, when you take away strikes and an audience where the combat is meaningful for someone on GSP's level, one has to consider that GSP isn't an Abu Dhabi champion. Everybody loses in training and exhibitions one time or another, so I wouldn't put too much stock in this.
MY MMA RANKINGS
HW Velasquez Cigano Werdum Cormier Bigfoot Barnett Mir Browne
LHW Jones Machida Evans Hendo Davis Goose Teixeira Shogun Mousasi Bader
MW ASilva Rockhold Belfort Weidman Jacare Okami Kennedy Consta Belcher Boetsch
WW GSP Hendricks Condit MacDonald Diaz Maia Fitch Kampmann Ellenberger Pyle
LW Bendo Alvarez Maynard Melendez Thomson J.Miller Diaz Pettis Chandler Grant dos Anjos
FW Aldo Mendes Curran Lamas Frankie Zombie
BW Cruz Barao Fernandes Faber Moraes