Daas Yochid: Although R’Moshe paskens-as you indicate-that the tevilah has to be done again, if you go through the whole teshuvo, you will see that there are many “tsedodim lehatir”, certainly “bedieved”.
However,I fail to understand the situation-“lekulei alma”, the Bais din waits until she is submerged to her neck in the water and then briefly- I repeat- briefly looks at her from the back. What is the problem in that? (I did not see rabbi Lipamn’s actual words, so i pead ignorance of his words)