See you did get lucky with the Nudi and now it is having babies
Yup, if you have ick all FISH only have to be removed. Let the tank then operate as normal. Put the fish in a ESTABLISHED QT tank and slowly lower the salinity. Lets make sure these are not just bubbles on the fish first.
If it is ick you should see spots ( as you are) and then one day POOF it is like they are all gone, only 2-3 days later, POOF they are back and more of them.
Steps in Hypo
ATJ's Marine Aquarium Site - Reference - Hyposalinity Treatment