This Dasey character leaked it to the web site you posted.
In this case, it appears that TPM was the first media source to make an inquiry and Dasey issued a statement. Whether it was a formal press release or not remains to be seen but he appears to have responded to a media request for information about the cancellation of the Lakin Article 32 hearing.
I do not know if Dasey’s response was over the phone, via email or in a written statement. But it certainly appears to have been a written statement in format.
If you have just a bit of patience, we should all know with 100 percent certainty in pretty short order whether or not Major General Karl Horst, Military District of Washington Commander is truly going to be the person to decide if the case will go to trial.
TPM is a left wing site...but guess you knew this.