SCOM R2 agent removed but stays in Computer field under monitoring

Hi,

I've already looked at article

http://social.technet.microsoft.com/Forums/systemcenter/en-US/2243f18a-e382-43bc-8bbd-7e7462c60670/scom-r2-agent-removed-but-remains-grayed-windows-computer-view-of-monitoring-pane

http://social.technet.microsoft.com/Forums/systemcenter/en-US/fc81793a-dec1-4f35-a331-dc106d38a689/scom-r2-agent-removed-but-stays-in-computer-field-under-monitoring

I've ran the query as stated in one of the article

select BME.FullName, DS.DiscoveryRuleID, D.DiscoveryName from typedmanagedentity TME
Join BaseManagedEntity BME ON TME.BaseManagedEntityId = BME.BaseManagedEntityId
JOIN DiscoverySourceToTypedManagedEntity DSTME ON TME.TypedManagedEntityID = DSTME.TypedManagedEntityID
JOIN DiscoverySource DS ON DS.DiscoverySourceID = DSTME.DiscoverySourceID
JOIN Discovery D ON DS.DiscoveryRuleID=D.DiscoveryID
Where BME.Fullname like '%ComputerName%'

And some discovery were found for my computer still listed under Computer in SCOM...  and now what should I do???  Is it something that need to be done in SCOM or SQL to remove those computer from the discovery that they are still associated with them.

Thank you for your help,
Martin