I've never heard the NS thing before. I've just heard about not having anymore children. There is a big big big difference between NS and NC.
If you're married now and both survive armageddon - you both stay married forever and ever and ever
If you're single now - you stay single forever and ever and ever
If you were married but only one mate survives armageddon - you're single forever and ever and ever
(of course if you have had a child die and a mate die and both get resurrected who gets custody?)
Of course, many dubs will tell you that there will be many many children resurrected that will need surrogate families to raise them. Therefore you will have children, just somebody else's. Unless of course their parents get resurrected too.
Many witnesses feel, in their hearts, that the not getting married and being like angels refers to the 144,000. That's not the WTS teaching, but it is one of those minor disagreements that you will hear whispered be even the most ardent dub.