Bob Backlund & Pedro Morales beat The Samoans (two straight falls) for the tag titles.
Turns out Backlund (WWWF champ) can't hold the tag title because he's the singles titleholder also
A tournament is held and the Samoans regain the tag team titles
All that was accomplished was to make your unbeatable tag team champs look beatable (they were just beaten two straight falls)
I don't see that as bad booking, I see that as your champs being unbeatable.
The bad booking is that "if this was real" the rule that Backlund was unable to hold two titles would have been known before the match took place.
I still don't see that as an issue. It shows that the Samoans were beatable when faced by the 2 top guys in the federation. It also showed that the Samoans could rebound and win the titles back in the Tournament.