Webb had committed to Penn State in May.
"[Webb] and Dajaun are inseparable," Hinson said. "They both loved the school. Their families loved it, and they'll be together."
Hinson said Webb's decision was not directly related to the damaging revelations of the Freeh report, Penn State's internal investigation into a possible cover-up of Sandusky's behavior by former coach Joe Paterno as well as senior school administrators.
Hinson also said Webb didn't de-commit from Penn State because the school could be facing NCAA sanctions.
"It was a family decision," Hinson said of Webb's decision to de-commit from Penn State and commit to North Carolina.
The 6-2, 295-pound Webb, a first-team all-South Jersey selection as a junior, had nearly 30 scholarship offers, including an offer from defending national champion Alabama.
Webb and Drennon both said during the 2011 season that they hoped to attend college together.
"That's the plan," said Drennon, a 6-4, 235-pound defensive end who also plays tight end.
Hinson said Drennon is projected as a combination defensive end/outside linebacker at North Carolina.
Contact staff writer Phil Anastasia at 856-779-3223, firstname.lastname@example.org, or @PhilAnastasia on Twitter. Read his blog, "Jersey Side Sports," at www.philly.com/jerseysidesports