Yes, Klemmer and Associates seems to fall well within the category of "large group awareness training" (LGAT), such as Landmark Education, EST, Lifespring, PSI World, NXIVM, Sterling Institute of Relationship, Impact and other similarly structured and controversial groups.
LGATs have their own set of repeated problems as anyone can see by reviewing them through the following subsection within the Ross Institute database.
Such courses have also been called "mass marathon training" and seem to have specific problems related to their structure and dynamics.
If you look back on this thread you will see that this link has been posted before and that "DiverGuy" is here to defend Klemmer and his "experience," not to exercise critical thinking and engage in any sort of meaningful dialog.
And if you compare DiverGuy's pattern of defenses against other threads about Landmark Education and other LGATs, you will seen that those that defend the other LGATs on this message sound virtually identical to DiverGuy.
That is, LGAT supporters typically refuse to seriously examine what's wrong with their LGAT through its design, dynamics and/or practices, and instead attempt to somehow place repsonsibilty for problems esentially on the participants, explaining "that's not my experience" and/or that the LGAT is "not for everyone."