If the Church decided that revealing the secret was not in it's best interest (public opinion, money, alliances), yes, it would mislead.
Excerpted from today's Inside the Vatican -
http://www.insidethevatican.com/latest-newsflash.htm
-----
In a May 12 letter to Pope John Paul in 1982, Sister Lucy wrote: "The third part of the secret refers to Our Lady's words: 'If not [consecrated and converted] she (Russia) will spread her errors throughout the world, causing wars and persecutions of the Church. The good will be martyred; the Holy Father will have much to suffer; various nations will be annihilated' (July 13, 1917)... And let us not say that it is God who is punishing us in this way; on the contrary it is people themselves who are preparing their own punishment. In his kindness God warns us and calls us to the right path, while respecting the freedom he has given us; hence people are responsible."
--snip--
Asked in 1980 why the Secret had yet to be released, Pope John Paul II told a German audience:
"Because of the seriousness of its contents, in order not to encourage the worldwide power of Communism to carry out certain coups, my Predecessors in the Chair of Peter have diplomatically preferred to withhold its publication.
"On the other hand, it should be sufficient for all Christians to know this much: if there is a message in which it is said that the oceans will flood entire sections of the earth; that, from one moment to the other, millions of people will perish ... there is no longer any point in really wanting to publish this secret message.
"Many want to know merely out of curiosity, or because of their taste for sensationalism, but they forget that 'to know' implies for them a responsibility. It is dangerous to want to satisfy one's curiosity only, if one is convinced that we can do nothing against a catastrophe that has been predicted."