Robin_Usagani
TPF Noob!
It wont happen to me because I only hire awesome 2nd shooters
but that would suck if the 2nd edit the photos and he/she uses selective colorings and heavy vignette.

Like most people I'm sure the second shooter would most likely prefer to avoid a full blown lawsuit as well...
That goes directly to my point. The couple likely has no legal ground on which to successfully sue, and I'd be willing to bet that the second shooter is well aware of that.
"Threatening" a lawsuit would be little more than hot air...
Amateurs, What can you do?