I don't think that's accurate. My understanding is that Levison was confronted with a pen/trap (metadata-only) order
for mail related to the Snowden account, refused it, and was then subjected to an escalating series of demands once the DOJ had "lost faith" in his cooperation.
Orin Kerr, who is one of Andrew Aurenheimer's attorneys in his appeal of felony CFAA charges, has a good starting point for what happened in the case, here:
http://www.volokh.com/2013/11/14/thoughts-doj-brief-lavabits...