Thread:ADour/@comment-3048593-20130316003500/@comment-4651179-20130316004210

Okay, I just unblocked him, so don't worry.

There's a "tool box" in the Contributions section of a blocked user which has the "unblock" feature:

"(wall | change block | unblock | block log | uploads | logs | deleted user contributions | user rights management | abuse log | Ban from chat)"