Well, having never having attended one of their cuddle seminars, I honestly can't say that they actually use Landmark techniques.
However just from looking at the 'loaded language' used on their website, I'd say it's a pretty good indicator that (at least in part) their teaching methods are plagiarised.
I've picked out a few quotes:
Quote
* lead workshops that leave your participants feeling [b:8d739541a5]touched, open, valued and nurtured[/b:8d739541a5] [i:8d739541a5](this sounds a lot like LE slang: touched, moved an inspired)[/i:8d739541a5]
* generate an environment where women and men communicate more [b:8d739541a5]authentically[/b:8d739541a5]
* [b:8d739541a5]listen profoundly[/b:8d739541a5]
Quote
Marcia and Reid are available for private [b:8d739541a5]coaching[/b:8d739541a5] to help you create more intimacy, affection, love, sex and romance in your life.
As someone who's done the Forum, much of the language and the subject matter covered on the site simply smacks of LE. As a requirement of taking any Landmark course, you are required to sign papers agreeing that you will not use LE's copyrighted teaching methods outside of Landmark for profit.
But I can't say for sure if they are intentionally violating that agreement, or if LE is simply such a core part of their lives (as often happens to graduates) that they are unable to think outside of that bubble.
PS: Yes you're correct, the $600 course fees only apply to the training seminar. My mistake!