Can I use my approved DTV visa after entering Thailand without it?

The individual initially faced a cancellation of their DTV application but reapplied and was subsequently approved while in Thailand due to a family emergency. They are seeking clarification on whether they can still use the approved DTV visa and enter Thailand again after traveling to a third country by land. Responses confirm that it is generally permissible to leave and return, with advice to ensure the exit and entry at a land border allows for reactivation of the DTV visa.