Answer by Oliver Starr:
All wolves destined for release (or re-release) are handled in a similar way: ideally they are kept in an habitat that closely mimics their natural environment including being fed diets that consist of what they'd typically be eating if they were wild.
In addition every effort is made to limit their exposure to people to avoid any habituation. This is especially important where food is concerned since captive wolves don't generally have the chance to hunt. As a result keepers need to reduce to a minimum any actions that cause the wolves to associate people with food.
Here's everything you might want to know about the red wolf species survival plan from USFWS:
And some video / live cams of red wolves at the Wolf Conservation Center in NY: