Block not scheduled after remediation revoked.
See event #1886 in production:
Notice these lines in the event log:
2011-10-14 08:21:47 rreitz Open Remediation revoked
2011-10-14 08:21:47 rreitz Open Event processed: Repeat detection of remediated event, detected after remediation (event re-detected at 2011-10-14 08:21:30)
A block should have been scheduled.