I read the thread just fine. This being your first post to this website, and wanting help, then are quick to start being a smart @$$ towards the people you are asking help from.
We have no idea who you are, or what your level of experience is. Something that is seized or stuck may mean different things to different people. So next time, maybe post a little more specific detail, or perhaps some pictures, and you will get lots better answers. You have no idea how many times someone new comes on here, and asks questions; but have no idea what they are talking about, use incorrect terminology, etc. Through asking questions we can actually get to the bottom of just whats going on. But aparently you took offense to us asking questions. Then failed to answer them. And you have been given real good suggestions already....have you tried any of them?
Lets recap.....
Post 5 asked what you were working on
Post 6 asked if you had a manual
You didnt give a response to either of those.
Post 3 said mow some saplings
Did you try that? Put the snap ring back on, go use the cutter without the shear bolt. Or did you already try that and we are somehow supposed to already know that too?