You're absolutely right. It's not all about relax. It's about fluidity.
Fluidity is a lot easier if you use relax, but if you can pull it off while using force on joints, that's even more impressive and more stylish.
I made this one just for you. I had holding stuff in mind, that is.
Still trying to work on boomhits, but I'm not sure this one counts. I really was just working towards the last kick for the whole replay.