Symptoms
User left company with workflows left unshared.
Diagnoses
Possible to share/unlock via the UI or stored procedure.
Resolution
K2 Designer for SharePoint - Workflow Sharing and Naming
http://help.k2.com/onlinehelp/K2blackpearl/UserGuide/current/webframe.html_PD06_WorkflowSharing.html
A similar issue of mine on the community:
K2 for SharePoint Designer processes locked to their creators
http://community.k2.com/t5/K2-blackpearl/K2-for-SharePoint-Designer-processes-locked-to-their-creators/ta-p/90727
