Hymenaeus did shipwreck in the faith saying that the resurrection is past already. This is that Jesus Christ second coming has happened.
(I Timothy 1:19-20 [KJV])  Holding faith, and a good conscience; which some having put away concerning faith have made shipwreck:  Of whom is Hymenaeus and Alexander; whom I have delivered unto Satan, that they may learn not to blaspheme.
(II Timothy 2:16-18 [KJV])  But shun profane and vain babblings: for they will increase unto more ungodliness.  And their word will eat as doth a canker: of whom is Hymenaeus and Philetus;  Who concerning the truth have erred, saying that the resurrection is past already; and overthrow the faith of some.
Paul compares Hymenaeus to a canker because many peoples faith were overthrown by his ideas. Also Paul has delivered him unto Satan and claims that he has blasphemed. So i guess Paul says its blasphemy to say that Jesus second coming has happened.
How should we deal with an Hymenaeus?
We should deliver him unto satan.