Regardless of how correct OP is I don't think it's a good sign the DSA has to release a public statement instead of just telling him to do it.
I've been saying since the start they wouldn't have any actual leverage over him if he pulled an AOC. Shit, I asked someone in the NYDSA once what their plan was if he cut and ran and all they had to say was "oh well he's really one of us".
If this is their idea of leverage, and they can't just pull him to the side and say "clean it up", then he's a dog off a leash as far as I'm concerned. Even if he ends up firing her, why is the DSA releasing public statements and not just telling him to do this outright?
You don't go public against one of your own people like that.