Can you give us the error details from the deployment status?
You can try removing the solution from the command line. Here are the commands:
stsadm -o retractsolution -name RadEditorMOSS.wsp -immediate -allcontenturls
...wait until the job is finished (usually a couple of minutes) ...
stsadm -o deletesolution -name RadEditorMOSS.wsp
the Telerik team