Not embarrassing at all. The scientists got an anomalous result. The published and asked others to verify. The verification showed an error. That is how real science done by real people actually works.
Compare to science deniers who state a conclusion and ignore evidence. Or who copy/paste from a web site and say "aha! I just disproved ______________ " without even knowing what ___________ is.
(fill in the blank - Nazi holocaust, global warming, HIV causing AIDS, evolution, sexual variation in nature, the towers fell when planes hit them, etc.)