Get on the ground under the bike on its right side. Put a good gripping leather glove on your spanner wrench hand and into a slot that gives you a good grip on it and hold the bike very firmly. Pull with all your might, Grasshopper, and if you did good...the bike will still be upright and the shock would have moved one or more notches. JOHN
Oh yea, it's pretty tight, but it will move as stated in prior posts, on ground from right side of bike and definitely need a good pair of gloves so that the spanner wrench doesn't dig into your hands!