Wrong terminology. What happened to the Scions in 4.4 (and prior instances) is "put on a bus".

"Stuffed in a fridge" is for when a character is disposed of entirely to give another character further motivation or development, thus reducing them to a plot device or plot point. Usually this happens to female characters, in order for male characters to have a reason to go on quests of vengeance or whatever.

For example, Avere was stuffed in a fridge for Edda. Moenbryda was arguably stuffed in a fridge for Urianger. Wilred was totally stuffed in a fridge for us.