Now I take the Einstein's formula as the inviolable ratio of space to time, motion to rest and gravity to space and I take gravity to be synonyms with motion and be a subset of energy which is something extremely difficult to define in any way to distinguish from the same motion again.
Wouldn't it be easier to say that gravity is indistiguishable from acceleration?
To keep so much motion so densely compressed and confined in so little volume or rather an absence of volume would imply application of a terrible force. Here is the problem. The laws of physics as they stand do not allow anything like that.
Which laws would these be? I think we can all agree that such a high amount of energy in such a small volume is very unstable, but that is kind of the point of the Big Bang. In fact, such a high concentration of energy could have resulted in a breaking of the symmetry between the four fundamental forces. Also, this high amount of energy could also be the cause for the sudden inflation of the universe.
So it may not be a case of this highly energetic singularity breaking the laws of physics. Rather, it may have created them.
Also either this infinitesimal baby universe is embedded in something or what it is embedded in is nothing.
Either way, the BB model pertains to the universe once it began to expand. If my knowledge is correct, other theories such as M theory try to explain the era prior to the expansion of our universe.