Yes morphs happen in the wild. Do they survive? Normally not. Hybrids also happen in the wild. sure some we doo in captivity are impossuble in the wild but hybrids do happen, and more often then one might think.
Also peopel can be irresponsible with morphs. At first one might be confused by this statement but its incredibly true. Some one might produce animals that are are 66% or 33% het. something and when they seel the animal they might forget to mention, don't know about it, or not bother to mention it all. Now some people might be happy to find a hidden in there snakes, but for some one who has spent a lot of money and time on a project just to a hidden het. ruin it definately wouldn't be happy about the hidden het.
the best example I can think of is in leopard geckos there are 3 different uncompatible strains of albino. Some irresponsible people will mix the lines and when people put them into project they don't know for sure which albino is which an ect. so people can be just a irresponsible with morphs as with hybrids.