The Everlasting Phelps believes that the Tulsa World has gone too far in pressuring the hosting provider for Tulsans for Election Integrity and has opened itself up for legal action:

This sounds to me, as a layperson, as an open and shut case of tortious interference with a contract:

The causing of harm by disrupting something that belongs to someone else -- for example, interfering with a contractual relationship so that one party fails to deliver goods on time.

TFEI had a contract with it's hosting provider. That contract has now been broken because Tulsa World sent a fraudulent and malicious letter to the hosting provider.

Phelps goes on to list the elements of tortious interference under Oklahoma and argues that at least two of the three have been satisfied.

UPDATE: More from Fire Ant Gazette on this topic.