I don't know if I called them by the correct name or not, but I called these guys "inline molex connector headers" Chances are that I have been screwing the name up.
I don't know if this is the case for yours, but sometimes only one side of the connector has a tab holding it down. These connectors were on my first cab, and I spend a very long time trying to disconnect it from the tabbed side, only to find out after a lot of time and effort that I could have just pulled it apart from the other side of the connector. I'm crossing my fingers that is the case for you as well.