We've all had the experience of having to separate tangles in our lines, especially those of us that have foil kites, and perhaps the biggest reason why most kiters prefer LEI kites in the first place!
Recently this article says it all...
www.seabreeze.com.au/News/Kitesurfing/Tips-for-Untanging-Kite-Bars-and-Lines_10677265.aspx
But I want to add another tip:
#shake it up baby!
That's right! Shake the lines. Most cases the lines fall apart and separate by themselves, especially when not wet.
The other tip I have is to spray the lines occasionaly with a good silicone spray. It keeps them tangle free for most of the time, and when they do tangle, again - just shake it up!