and i quote from the nap that was sent 
"
in 2vs1 situation or Xvs1 situation, where X is greater than 2, nap can be voided under the following conditions:
Meaning of Attack in the following 2vs1 CLAUSE: fig runs, ground run, taking more than 2% of the planets of the attacked family within 40 ticks.
START OF 2vs1 CLAUSE
when family 4701 is attacked by one or more families and the ally of 4704 already attacks or starts to attack 4701 the nap can be voided immediately.
when family 4704 is attacked by one or more families and the ally of 4701 already attacks or starts to attack 4704 the nap can be voided immediately.
END OF 2vs1 CLAUSE"
key word is "CAN"... it doesnt say... "the nap IS voided immediately".. by putting the word "CAN" still gives the option to the other fam wishing to join the attacks...
in this case, my fam ( 89 ) is in a 2 v 1 situation with 04 and 91... so 01 CAN void the nap against both fams... it doesnt mean that its automatically voided... it simply means 01 HAD THE OPTION to void the nap or keep the nap depending if they want or can help allies or not
...
If it means "nap is voided immediately" then why have a nap in the first place? knowin that you are just purposely just gonna break it anyway??.. im just sayin 
Yes!