OK, listen carefully. If you look at the riser behind eack limb pocket there is a barrel nut that the limb bolts thread into. If you look more carefully you'll see that you can actually see the bolt threads.
NOW, you can back your limbs off as far as you like, in fact, probably far enough to take the bow completely apart---without the use of a bow press. As you back off the limb bolts you'll come to a point where you can start seeing daylight through the barrel nut. This happens usually when you've taken about 9-10 turns off. This is pretty much where you want to stop. At this point things should be pretty slack.
I have backed mine off till the bolt threads only showed about halfway through the nut. The bow is not going to go "Kaboom" if you take your time. FYI, Martin is one of the few bows you can do this with.
If You're Not Living on the Edge You're Taking Up Too Much Space
Martin/Rytera Staff Shooter
PSAA Life member, UBP Life member
PADI AOW Diver