Yes they had, but the King didn't hold up his end of the bargain and only after 10 years of petitioning to redress their grievances did they renounce their allegiance and even then, only after the King sent his army to enforce his illegitimate decrees. No such process preceded the treason of of the 1860s. It was unilateral and completely unjustified.
I understand that it is difficult for a true believer of the Lost Cause lies to understand the differences between the Patriots of '76 and the slaveocrats of '61, but read the Declaration of Independence some time. It explains the difference quite nicely.