Dear Father Siluan,
Since the sources say that the relics are not of St. Seraphim of Sarov then that would mean that the Muscovite Bishops were negligent of this truth or had lied to the Unia when they lent the holy remains.
Either way we can all agree that Saints are within the One, Holy, Catholic, and Apostolic Church and not outside of her. Since Papists are outside the Church there is no spiritual benefit for the holy relics to be lent to the Unia. As Jean-Serge and I agree this will only strengthen the Unia, which for the last 400+ years has sought to convert Orthodox Christians to heresy through subterfuge. It pains me still when after what the Saints themselves warn us about betraying the Faith many "hierarchs" are so willing do so. Perhaps this quote explains the why?
Saint John of Shanghai and San-Francisco has thus characterized the signs of the end of the world: "There will be a mass falling away from faith, moreover many bishops will betray faith justifying themselves by pointing at the splendid state of the Church. People will be disposed to search for compromise. A forthright confession of faith will disappear. People will excel in justifying their fall, and tender evil will contribute to such general disposition, and people will become accustomed to apostasy and to sweetness of compromise and sin." [344]