"May his name be blotted out" for a Jew

Question: I have heard that Ha-Rav said that it is forbidden to say "May his name be blotted out" for an evil Jew, even if he opposes the Nation and Land of Israel. Is this correct?
Answer: One must certainly fight against such ideas, but this does not mean that it is permissible to say "May his name and memory be blotted out." I did not invent this. It is said in the name of the Sochachover Rebbe, the author of "Avnei Nezer." The proof is quite simple. If a man dies childless, his wife must marry the brother of her deceased husband. This is called "Yibum." The Torah says that the reason for "Yibum" is so that "his name is not erased from Israel" (Devarim 25:6). But what should I care if his (the evil Jew's) name is erased? If I say "may his name and memory be blotted out," what is the problem if his name is erased from Israel? There is no halachah, however, which eliminates the need to perform "Yibum" for a sinning Jew (Shulchan Aruch, Even Ha-Ezer 157:3). This therefore means that I must be concerned that his name not be erased from Israel. It is true that he is a sinner, but there is a solution: He can repent. This is based on what Beruriah said to Rabbi Meir in the Gemara in Berachot (10a). Rabbi Meir had evil neighbors who had caused him much distress, and he prayed that they should die. His wife said: "Doesn't it say in Tehillim (104:35), 'Let sins cease and let the wicked be no more.' It does not say 'Let sinners cease,' but 'Let sins cease.' You should pray that they repent, not that they die." In fact, he prayed for them to repent, and they did. Therefore, we should not say "may their names and memories be blotted out," but we should pray for them to repent.