That sequence was done my 1st year using Xlights/Nutcracker (3 years ago now?)... If I remember correctly back then had to send an off signal to make sure the lights actually turned off and didn't remain showing last effect.
With Xlights 4 out now I want to go back and re-do some of my 1st ones (4 being easier to use and me being a bit more seasoned on how to use the program), hopefully will get to them in 2016.