As someone that has had many falls from grace* in dealing with folks on this and other KOTOR communities, I may have some suggestions. And I am making this post here rather than doing this in a PM.
Don't private the videos but make them unlisted. Even if you're going to attempt to lessen the blow in your reevaluation and readdresal of the Cathalan situation, you want folks to see what was said. If they know where to search for the videos (i.e. this thread), they can learn what you did say. Of course, you can take actions to lessen future harm by turning off comments to those videos though.
I'm not sure what you plan to communicate in your official post. Contrition for what you said? Toning down the negative commentary but providing an even handed review from today's perspective? Will it be making suggestions (or even offers of actual modding help in the form of patches) to the work? Hard to say. But to make the videos completely private just doesn't feel like the right way to go, especially with the thread providing evidence that something happened. Because any apology would have to acknowledge any harm done.
And this was a long post to type on a phone.
* Not her.