I never saw the rear end on the hurricane but I’m pretty sure the spring is on the shock and it should bolt to the frame and the swingarm along with the dog bones. Pretty easy to take off you just need to support the bike somewhere other than the swing arm.
spring should be mounted on the shock, in which case you will just unbolt the whole assembly. you only need to compress the spring to remove it from the shock.
when Tim and I did the swing-arm swap on his bike I think we just unbolted the bottom of the shock and let it hang from the top mount… I don’t remember removing it completely but I could be wrong.