The forums are munging the code block. The basic idea I was trying to suggest was to remove the outer curl braces from the ::sorry variable value and remove the inner double quotes:
set ::sorry "< html >< a href=http://xxxxx.xxx.xxx:8089/PlannedChanges/ >< img src=/error/image.jpeg border=0>< /a >< /head >< body >< p >This site is temporarily not available. If you would like to validate whether this is planned downtime, please click on the xxxx Logo< /p >< /body >< /html >"
I've added spaces in each of the < tags >, so remove those or just make the changes manually to your code to replace the outer curl braces with double quotes
and remove the inner double quotes.
Aaron