A Maricopa County judge's decision protecting a utility regulator's text messages from public scrutiny is a blow to the principles of open government. It's not so much that Superior Court Judge Randall Warner kept Arizona Corporation Commission Bob Stump's texts away from prying eyes. It's the lack of explanation. A little history: A Washington, D.C., outfit called Checks and Balances filed a public records request for Stump's text messages.It received a log of contacts and w