I have tried to remove the tag system from these characters.
I have testet it a little. If you go into the main cns file in the folder of your selected character. press ctrl + f and search for 5900. Remove every state with 5900 from the code and save. This removed the tag for me. I tested it with Chris_Kofe, and it worked. Need more time to test for bugs, but so far I have him fighting at the same time with his parter, without tagging out. I Assume you have to do this with every character to remove the tag system.