Totally easy to get off without a key.
there are a couple ways you can do this.
the first one is to get someone you know or a forum member to send you a copy of their T-Top lock key. Then, insert the key into your own T-Top lock, and shake rattle and roll, untill it unlocks. Sounds a bit medival, but it works. The T-Top locks are not very high quality, and nearly all T-Top keys will work when used like this.
the second way it a little more dangerous, but if done with care will work without damage. the 1/4 inch long pin that protrudes from the lock to keep the top from opening is visible through the cracks around the handle. What you can do is lodge a small screw driver in the area around the handle and "Gently" pry the crome lock bar up and over the lock pin.
I have used both of these methods with success. the first is my prefered way since it is less invassive.
If you need a key, i can get you one to use method # 1 on.
Good luck
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-Monkey