How long would COSTCO cryovac papckaged St. Louis style ribs be good for after the "packaged on date" on the package? I know thier briskets can be aged for a month or more but am not sure on their ribs. I have some ribs that were packaged May 30th with a jun 6th sell by date. Bought them on June 4th and put them in the freezer on June 11th. I took them out on June 16th to thaw in the fridge. Should they still be good?