Can I cancel my expired Non-O extension and apply for a new visa while my spouse remains in Thailand?

The user has a Non-O trailing spouse visa with 10 months remaining but needs to leave Thailand due to an emergency without canceling the extension. They're concerned about future visa options after leaving and whether they can cancel the expired extension when applying for a new long-term visa. Community members advise that if the extension expires and is not canceled, it may be treated as an overstay, potentially incurring fines. However, the cancellation can still be processed when applying for a new visa, suggesting that necessary documentation for cancellation should be prepared in advance. If returning as a tourist, this should not pose any issues.