Yeah, I tried that one weeks ago and the SOD still happened. When someone posts a "fix," it isn't long before they or someone else comes back and says "Well I guess it didn't fix it after all..."
The only thing that consistently works is using Advanced WiFi Lock from the market. Other things might decrease the SOD occurring, but nothing else completely eliminates it. I have tried pretty much every "fix" out there, and this is the only one that honestly works all the time. Advanced WiFi Lock basically keeps the tablet from actually going to sleep. The screen can be turned off, but the tablet remains awake. Of course, by the nature of what the app is, WiFi also needs to be left on. Sure you'll drain slightly more battery (and I really do mean slightly), but it's more than worth it to not have the SOD happen every other time you try to get it to come out of sleep. I used it for two and a half weeks and never had a single SOD with the app installed and enabled. Prior to that, I used to get them all the time.
But Toshiba's fix is definitely right around the corner.