In the past, I would frequently cook (in the oven) 6+ lbs (3+ kg) of salmon fillets (usually took ~25 min) to an internal temp of 145-150 F (62.5-65 C), take them out, let them set on the counter for an hour or two, and then throw them in vacuum-sealed bags and into the freezer.
Then, when I wanted to eat one, I'd take it out and throw it in the microwave. Understandably not the tastiest thing, but it worked well enough. I've never tried it with meat, only fish. As far asI know this never made me sick.
Now, all of the sous vide literature emphasizes a rapid chill in an ice water bath if you want to freeze something. Is this really necessary? For a very thick steak (say 2 in (5 cm)) it could take 3+ hours to fully chill down to 41 F (5 C) in the middle, so if that's still safe to eat, why must you chill thinner cuts? I'd expect anything 1in or less to chill within 3 hours in the freezer. Obviously, you can extrapolate this out and say that, e.g., a 0.125 inch (0.3 cm) cut wouldn't need to be chilled in an ice bath, so the blanket suggestion is only necessary above a certain thickness.
If anyone has found graphs of time/temperature when freezing meat from a cooked temperature, that would be helpful. If that doesn't exist, what's a best guess for the thickness at which pre-freezer ice baths become important for safety?