They are also wording their defense very carefully:

"[people claim] YogaGlo will now try to shut down any business or individual teacher that films a yoga class, which again is not true. There are many ways to film a class as evidenced by the many videos that currently exist that do not violate our patent."

Note how the overall tone here is "it's incorrect to suggest we're going to shut down all yoga class filming," (incidentally, a suggestion nobody is making) and the subtext is "so long as you film in a way that doesn't violate our patents."

edit: This post of theirs really seems to just dig them in deeper. They look like clueless assholes.