[cableguymn]

My guess is that he ignored the advice of his lawyers (and possibly his father) and accepted a plea bargain.

---

+1

OR

There are details we don’t know yet.

OR

They caved and filed the charges even though they have a weak/no case to let things simmer down.

[Theoria]

If non public forensic evidence counters Zimmerman’s statements and account, then he has a problem.