The pmlicense command is reporting more licenses in use then actually are.
The Management Console for Unix (MCU) may report you have "exceeded the number of hosts allowed by your current Quest One PM for Sudo plugin policy license" when in fact you have not.
Privilege Manager ER -- 0005925: Ability to track and report on joined hosts in policy group.
pmlicense never de-allocates the used licenses, even if the agent/plugin is un-joined from the policy group.
MCU Product Defect:
Pending fix in future product version
Remove the following file from each policy server: /var/opt/quest/qpm4u/.qpm4u/.lhosts/.lmap file