Mo- The only way that would be a BX is if there were seeds from two generations.
For example: If the mother (Faceoff OG) was pollinated by it's offspring (Doc's OG), the result would then indeed be a backcross.
If a male and female from the F1 hybrid generation of Doc's OG were selected, the resulting progeny would be an F2.
If you took the chosen F1 mother of Doc's OG and pollinated with a male selected from the F2 progeny this would also be considered a BX.
Hope that isn't too confusing! Cheers, DUB