Since writing the above, a bit of quick research turned up this, regarding my own non-Filipino-attorney take on the interpretation of the relevant Philippine law. My interpretation has not been supported by Phils courts, as seen in this passage:
The apparent requirement that the divorce should be obtained by the foreign spouse abroad has since been clarified by the Supreme Court of the Philippines in Republic vs. Manalo (G.R. No. 221029, April 24, 2018), saying:
“ Assuming, for the sake of argument, that the word “obtained” should be interpreted to mean that the divorce proceeding must actually be initiated by the alien spouse, still, the Court , will not follow the letter of the statute when to do so would depart from the true intent of the legislature or would otherwise yield conclusions inconsistent with the general purpose of the act.
The foregoing may be found here:
https://www.hg.org/legal-articles/8-steps-to-a-successful-judicial-recognition-of-divorce-in-the-philippines-new-and-updated-for-2021-58954
Again, none of this puts us any further ahead, since, in the case under discussion, neither party was a foreign spouse when divorced.
The apparent requirement that the divorce should be obtained by the foreign spouse abroad has since been clarified by the Supreme Court of the Philippines in Republic vs. Manalo (G.R. No. 221029, April 24, 2018), saying:
“ Assuming, for the sake of argument, that the word “obtained” should be interpreted to mean that the divorce proceeding must actually be initiated by the alien spouse, still, the Court , will not follow the letter of the statute when to do so would depart from the true intent of the legislature or would otherwise yield conclusions inconsistent with the general purpose of the act.
The foregoing may be found here:
https://www.hg.org/legal-articles/8-steps-to-a-successful-judicial-recognition-of-divorce-in-the-philippines-new-and-updated-for-2021-58954
Again, none of this puts us any further ahead, since, in the case under discussion, neither party was a foreign spouse when divorced.