I got to the part where the words 'strong nuclear force' came up, and those words in that order was enough for me to reach the conclusion that it would be bad to make it angry.
The strong nuclear force refers to the strong interaction, which is an extremely powerful (100 trillion trillion trillion times more powerful than gravity) attractive force with an extremely short range (a couple of proton-lengths away from its source it all but disappears) that, among other stuff, does two things we care about both in general and in a telefragging discussion:
1) It binds things like protons/neutrons and prevents them from breaking apart (since protons/neutrons aren't actually elementary particles, they're made up of even smaller stuff);
2) This force also "leaks" out of protons/neutrons, extending a short distance away, at a much weaker but still powerful magnitude. Since it's an attractive force and extends enough to cover other nearby neutrons/protons, it pulls all of them closer and bunches them together. It's why the nucleus/core of the atom exists at all, the strong interaction is holding all the protons and neutrons together like a forced group hug.
I say
forced group hug since the atomic nucleus includes protons, who've got a positive charge, and same charges repel each other, which means the protons in an atom really don't want to stay together. However, even weakened as it is after leaking outside of the innards of a proton/neutron/etc, the strong interaction is still powerful enough to tell electromagnetism to eat shit and behave, thus keeping the atomic core stable.
The problem with trying to get a telefragging nuclear explosion, and why you only see nuclear fusion in things like advanced nukes and stars, is again, that the electromagnetic force of protons really wants to push them apart. To get nuclear fusion you don't only need protons close like in an atomic nucleus, they need to actively fuse/combine, and since the electromagnetic force screams "NO!" when you try to do this, you need them very, very, very, very close together for the strong interaction to overcome electromagnetism enough for fusion to occur.
Needless to say, having a person telefragg such that one of their atomic nuclei happens to pop into existence basically right on top of an atomic nucleus of the wall they're in is so miniscule that you can probably round it to zero, let alone this happening enough times that you get any kind of city-wiping explosion.
TLDR: Strong nuclear force/strong interaction holds atomic cores together, electromagnetism wants to pull them apart. The chance to get nuclear fusion through telefragging, let a lone a true nuclear explosion, is basically zero.
Edit: However, like others have stated, you might still get an explosion due to other factors, just not a nuke.