Alex Dudley, a specialist in corporate crisis communications, has left Time Warner Cable after serving as the cable company’s group vice president of public relations, to take an executive position at Charter Communications.

Our readers will recall Dudley represented Time Warner during its 2009 experiment with usage caps and consumption billing. He tweeted company talking points from his @TWCAlex account. In the summer of 2010, more than a year after the experiment was shelved after customer protests, Dudley was still defending the need for broadband usage limits:

“As Internet use increases, TWC techs, engineers, and executives need to make adjustments such as DOCSIS upgrades at the cable company headend or “node splits” that divide a shared cable loop in two when bandwidth use hits certain metrics. Paying all of these people costs money, and those costs increase as the network is more heavily used.”

Unfortunately for him, Time Warner Cable’s own financial reports belied his claims. The DOCSIS 3 upgrade, now complete at Time Warner Cable, had no material impact on the company’s pre-planned capital expenses, and was undertaken at the same time the cable operator began increasing prices on broadband service.

Dudley will assume the role of senior vice president of communications at Charter on March 18. His high-profile status at Charter was reflected by a statement from Charter CEO Tom Rutledge welcoming him to the company:

“These appointments reflect a commitment to our customers, shareholders and employees to support and sustain the positive changes taking place at Charter,” Rutledge said. “Alex is a proven leader who brings with him a wealth of expertise in developing and managing compelling messaging and executing high-impact, strategic communications. He will be a valuable contributor to our organization.”