Here is an attempt at an explanation for the first trick in the video. It starts with a Japanese under whip. Next I pinch the string against the stick with my right middle finger. Then unmount the loop in front of the diabolo and whip it over the near diabolo cup. This leaves the diabolo on a string hanging from your finger, not from the stick. This makes the exit a lot easier! Next spread the two strings from your finger apart. Then pass the string coming from the right stick tip and the string left of the spread pair down and underneath the far diabolo cup from the left hand side. At the same time bring your left hand stick around underneath the near diabolo cup. Hopefully you should now be in an eiffel tower figure. Hold for dramatic effect. Exit by doing an anticlockwise sun and then dropping the strings that you are holding.
Hopefully this is clear enough to follow. I should be in Birmingham tomorrow, so anybody should feel free to ask for a better demonstration.
An alternate exit is to do a horizontal suicide by throwing the left hand stick forward, letting it wrap around the strings once, catching it and the dropping the strings. Or catch the stick behind the back, drop the strings and go into a behind the back combo.
Murifri, which trick are you trying? I can post an explanation for you later.