Will Nick Fallon's return to Salem reveal a secret about Johnny Dimera's paternity?

In 2007, Nick Fallon worked at Salem University Hospital.  When Sami Brady was pregnant with her twins, Johnny and Allie, busybody Kate Roberts blackmailed Nick into altering DNA test results for Sami's twins to make it appear that EJ Dimera was the father to both babies.  Nick was always determined to do a real test and eventually came clean with everyone. He ran a real DNA test which proved both Johnny and Allie were Lucas Horton's.

After Sami had the twins, EJ commented that the twins looked as if they could have different fathers.  After some convincing, Sami agrees to have another DNA test done on the twins.  Sami left the hospital while this test was being performed and it was EJ who received the results first. The results of this new test show EJ to be Johnny's father and Lucas to be Allie's.

But now that Nick's back (and I can not think of a single reason for his return) maybe he is here to drop an unhappy little bombshell on everyone.  Maybe the DNA test he ran originally was correct.  Maybe Lucas is indeed Johnny's father too.  This would be an interesting turn of events.  We all know Lucas wouldn't allow EJ to father Johnny in any way if Lucas found out Johnny was his son.  A war would surely ensue. And what would Sami do? Who would she side with?

I hope this doesn't happen but with Days anything is possible.  I guess we'll have to wait and see.