I dropped my mast 2 years ago.
I had my mast dropped 2 years ago by a guy who had a boom truck...don't think you could do it by hand. I just loosened up the shrouds until he got a grip on the boom right under the spreaders. I then undid all the shrouds and steadied the lower part of the mast as he slowly raised it upwards about a foot. I was then able to cut the wiring for the old mast lighting, anchor lights, etc. I replaced the wiring, wiring plug and it all works like a charm. The sheaves are easily accessible. The brackets for my wooden spreaders was welded on and so, I reworked the wooden spreaders even though I had a set of aluminum spreaders with their brackets. I just did not want to tackle the job of cutting the old brackets off. Hope yours goes as smoothly as mine did.