There is only one small possibility. Only if you had done an iTune Sync *before* you deleted the data and have not done another Sync since you deleted the data. If you have done an iTunes Sync since you deleted the data, there is no way to get it back. If you haven't done another Sync, what you can try is do is this. FIRST do a Backup of your current data to Dropbox (just so you can always revert back to it). Then try to Recover the data from the iTunes sync backup and then Restore that data into Time Master and see if that gets you anything. If that doesn't work, unfortunately there is nothing else you can do.
Here is a link to the thread that explains how to use the 3rd party "iTunes Backup Extractor".
http://on-core.com/forums/index.php/topic,82.0.html
