Netflix seems to be recovering from the worst blunder in its 15-year history. Many customers who left the online movie hub after last year’s price hike — an epic fail — are returning.

In July 2011, the movie rental subscriber separated its popular unlimited DVD-and-streaming duo into two separate businesses: Netflix and the widely ridiculed “Qwikster.” We wondered if it was “the worst product launch since the new Coke.” Users who only paid $9.99 for the combined unlimited service for…