I think you are correct, i must not have posted it. I couldn't find it either.

So here it is....

Code:
/castsequence [@tankname] reset=2 Cleanse,Null
/castsequence [@healname] reset=2 Cleanse,Cleanse,Null
/castsequence [@dps1name] reset=2 Cleanse,Cleanse,Cleanse,Null
/castsequence [@dps2name] reset=2 Cleanse,Cleanse,Cleanse,Cleanse,Null
/castsequence [@dps3name] reset=2 Cleanse,Cleanse,Cleanse,Cleanse,Cleanse,Null
as i mentioned before, it will not keep cycling if you keep mashing the button. The macro needs to reset itself to get back to the first castsequence line, in my case it takes 2 seconds. The only way i can think to keep it cycling would be to use a modifier key to reset the macro rather than a timer. This way you could hit the mod key each time you want to restart the cycle.

I tested this when 4.0 was first released but i have not used it for a while so i can't guarantee that it still works, but i hope it helps.