I think he's talking about removing the terminals from the blue plastic.
They're held in place by little metal tabs on each terminal, Jay. You need to insert a terminal tool (basically a thin, flat piece of metal, sometimes a small screwdriver works) next to each terminal from the open side of the connector. This depresses the tab and the terminal will slide out the back. You'll need to pop the rubber boot off the plastic piece first.
Here's a disassembled photo showing the pieces. You can see the tab on the top of each terminal that retains it in the plug.
From my experience, make sure you get some quality connector rubber covers. I bought some and in 3 months they were falling apart. They look the same but are not in terms of the quality of the rubber. I think I got my good ones from Centerline.