Welcome to the forum FairyGodMother! Yeah, I was wondering that too. I was in and out with listening to the show, and never heard him specifically say Freddie was still alive. However, he kept speaking as if he was still alive and not in the past tense from what I remember.
That is correct. Dr. Reed said that "Freddy" likes to pop in, uninvited, and just stare at him.
I guess if somebody were to wrap me up like a burrito and then placed me in a freezer I'd still be a bit ticked too!