Squeeze the terminal with needle nose pliers and push it out the back of the connector. The sealant was a very minor amount on my connector and was easy to remove. I don't think it is important to put back. There are connectors all over the vehicle that don't have that sealant on them, including in the engine compartment.
More info:
http://67-72chevytrucks.com/vboard/s...d.php?t=708975