What prevents the large scale proton annihilations in case of two solid blocks of hydrogen? Although a solid block of hydrogen might provide the needed support for keeping those spinning vectors in wanted orientation it also provides an environment which induces the rotation for those enclosed protons a.k.a. proton electrons. Such a rotation phenomenon ruins the chances for the accurate contact between two lattices put together.
What can be done about the rotation? Obviously it must be tamed, but how? This needs further research.