Yes - it's very simple!
Go to the incident slack channel
Use the command
/inc updateUpdate the incident status to the relevant "open" status
You can also do this within the dashboard. Just head to the incident's homepage and click Share update. You'll then see the pop-up shown below where you can re-open the incident.
If your incident channel has been archived:
Go to the slack channel
Go to settings
Unarchive the channel
Then complete the above steps!
