It is not always easy to say this with full force in natural sciences, but: NO, this theory is NOT true, probably not even by any means. Extraordinary claim require extraordinary evidence. But wow, there is NO evidence AT ALL for this claim.
Before tackling the main point, I give a side note that would actually be sufficient to not be concerned with the argument itself: Extraordinary evidence is rarely (if ever) presented (i) by single people's research (rather then by a really large body of evidence provided by several independet reseearch groups, different lines of arguments, ...) and (ii) outside of peer-review high-quality journals. For example, you do not report major findings on your dubious website relating to a reference like this:
To cite this publication
McCarthy, E. M. 2013. Mammalian Hybrids. www.macroevolution.net/mammalian-hybrids.html (Add access date).
However, I would also adress one actual issue. For the sake of argument, I consider the claims to be just as valid as any other claim I ever heard based on morphological features (and with that I do not say that anatomical comparsions in general are nonsense. Au contraire, I believe that these comparisons are important to reconstruct evolutionary histories, especially but not only in extinct organisms where DNA comparison is not an option).
In extant animals (like humans), however, anatomical and genetic comparisons tend to converge and/or the anatomical evidence is adjusted to insights gained from genetic comparisons (meaning that anatomical similarities supporting the findings of genetic comparisons are found really often. Do I provide a citation for this? No, there are thousands or even millions. This is SO well-known that any journal probably accepts this as common textbook knowledge and does not even ask for one).
Long story short: There is NO genetic evidence AT ALL that indicates a mixed descendence of humans from chimpanzees and pigs (wow, I would never had thought, I would write a sentence like this, ever in my life). Additionally, there is NO anatomical evidence for that mixed descendence AT ALL apart from McCarthy (2013) - haha.
PS: I posted a corresponding answer to the skeptics.SE question as well.