Yes and no.
Was the American Revolution justified in:
1.) Revolting against Crown Rule of a Christian King (Anglican, yes, but anointed King in the same ceremony used since Charlemagne). No.
2.) Blaming the Crown (as representative of the entire British Government), for being tyrannical, oppressive, etc. No.
3.) Creating, in effect, the first democratic republic since ancient Rome, that a flowering of liberty may shine forth in a world overwhelmed by usurpations and corrupt governments. Yes, if that liberty is guarded by piety.
4.) Birthing the first government (perhaps ever) that was officially neutral in matters of religion, due to the multifarious, fractious Protestant sects fighting for supremacy, and the deeply Masonic connections of the Founding Fathers. Thus paving the way for secularism and the disintegration of Christendom. No.
5.) Protecting their “natural rights as Englishmen”, which were elucidated by Locke and Hume, Blackstone and other philosophers as inherent to being human. Maybe, for the nobility in England had ever contended with the Crown to protect their rights and privileges. This is simply an extension of those rights to the common man. This was inspired by the 1689 (Protestant) English Bill of Rights which granted certain rights to the people and subjected the Crown to Parliament (from and American perspective an imbalance of power in the which the legislative was given power over the executive).
At the end of the day, while I am a monarchist at heart, I remain an American to the core and will gladly put down my life in the defense of true liberty, the highest form of which is slavery to Christ and His Holy Will.