while teams and players can't officially commit during the moratorium period, the stakeholders must be able to trust what the other says because of the enormous implications otherwise.
the Mavs wouldn't have offered Wes Matthews a contract if DJ didn't commit to them. they wouldn't have backed off the Pacers deal, which would have meant that the Lakers had to look elsewhere for frontcourt help. what if Marc Gasol suddenly says, sorry Grizzlies, I'll move to Dallas?
maybe a really short moratorium period next season?