You cannot test teatimer.exe that way,the window will not come up if you doubleclick it,it has to detect a change first.
This is a quick way to get it to pop-up the Teatimer window,which you can do if you have sdhelper checkmarked:
First,doubleclick Teatimer.exe,if the last thing you doubleclicked was Teatimer_original.exe.Then,you could open Spybot,click Immunize,remove the checkmark from beside 'Enable permanent blocking of bad addresses in Internet Explorer',Spybot should detect that change so you can see the Teatimer window,and see if the fix 'took'.
Then you can click Allow,and recheck the checkmark beside 'Enable permanent blocking of bad addresses in Internet Explorer' to reenable sdhelper.
Teatimer_original.exe is a backup of Teatimer that Reshacker makes in case anything goes wrong,so you wouldn't want to doubleclick that,since it is a copy of Teatimer.exe from when it still had the wonky window.