You are disconnecting the fuel rail to replace the lower gaskets, correct? All you have to do is push on the bleeder in the fuel rail to relieve pressure.. They are probably telling you to get it all out to avoid getting any in the oil?.... But, if ur gonna do the work, change ur oil when ur done...
Twist the hoses then pull. A twist will break them loose and then you should be able to pull them off. You might want to use a pair of needle nose pliers and push the vacuum hoses off. Hoses are easier to fix then the vacuum fitting on the supercharger.