Other then laziness is there a reason you cant thoroughly clean and re-apply paste? I say...why risk it. You have the cpu off, the cooler out, there is no more perfect time to do this! If I have this opportunity I always take it.
if i knew how to remove this v6 cooler i would. look again at the bottom part and see if you can give me a answer. if not ill look the manual up online. thanks!