Duplication with server lagg

I logged on a hamachi lan server (from my friend) finding that I couldn't interfere with the world (server lagg), so I relogged. This did not help, and I could see the other me (the one before relogging).

I thought I would lose connection.

But I just died by a zombie twice at the same time really fast (after the lagg was gone) (twice;myself and the me I could see).
Then I respawned and could pick up my stuff TWICE.

Steps to Reproduce: (this is hard :/)
1. Connect to a hamachi-port-forwarded lan (not sure if this is neccesarry)
2. Have Server Lagg (I have no idea how to make that happen)
3. relogg next to a zombie (not being able to interfere with the world)
4. See yourself
5. Die twice and respawn
6. Pick up your stuff