The Israeli Yated (quoted on Kikar Hashabbat)tells the background to the story. It involved two people from Bne Brak who traveled to London shortly before Pesach to find support for their Kolel. The Thursday before Pesach they traveled back but their flight was diverted to Cyprus as the airspace over Israel was closed due to the departure of President Obama. They had to spend Shabbos in Cyprus and wanted to take the Motzoi shabbos flight back home. However that flight flies over a Jewish cemetery in Gush Dan and, as one of them is a Kohen, they contacted Rav Zilverstein shlitoh, son-in-law of Rav Eliashiv ztsl for advice.It was he who advised him to envelop himself in a plastic bag whilst the plane is over the cemetery, creating a “tzomid posil”.
As such this person is a Tzaddik for putting himself in such an embarrassing situation for the sake of Halocho. At the same time it is definitely not a Chilul HaShem, because following Halocho is never a Chilul, but rather a Kiddush, HaShem. If you feel uncomfortable with that, you are suffering from a Golus mentality and need to improve your hashkofos (and knowledge of Halocho).