96 XC 600 Triple Fox Shock

A friend of mine has a 1996 Indy XC 600 Triple with a Fox gas shock in the rear of the skid.

He had it re-built last year by a reputable shop here in MN and it leaked shock oil all over my trailer after a couple hundred miles of riding

I have Fox Floats on mine so I am wondering if I need to somehow compress this gas shock prior to removing the bolts?

Is there a special tool needed to work on these gas type shocks to compress them?

Thanks for the input. I tried it a couple days ago and you are right, fully extended the suspension and there was no pressure on the shock at all.