I throw a farming hoe (spamming the throw key like 5times) and my character just did the throw animation, lay down, stood up again, did the throw animation again and then lay down like a dead body. Then I was unable to move, so i relogged.
I was able to move again and had not lost anything but the farming hoe, but even though I wasn't holding it(since I didn't have it anymore) I often had the "make garden plot" message pop up (even looking at cars and stairs) and had some trouble getting other weapons out. After I did another relog everything worked fine again.
A friend and I tried it with another farming hoe, but we could not reproduce it.
But I will try again with the next farming hoe I see as well as some other items, since it maybe is not item-specific.