That is the implication, yes. That if this world can be nursed along for another thousand years or so, TDO has a good chance of making it, even if it is perhaps not guaranteed.
Or course, the other way for TDO to survive is if the Snarl does not rampage or rampages for an unexpectedly short duration. There are possible ways for that to happen, but such seems outside the influence of Thor and TDO or any god.