No, you'd have walked away in shame if you had walked away in handcuffs. Don't do stupid stuff. Imnsho you got lucky that disk filled up before you could notch up a(nother?) crime.
What happened is arguably more stupid: by filling up the disk, 1) they definitely noticed, 2) I couldn't get what I wanted, and 3) I couldn't clean up the logs after it. Thankfully I had covered up my steps (or, more probably, the sysadmin was ashamed to see he had been hacked and chose to fix it and say nothing).