Ok- what evidence proving the theory do you want? The universe? The GR claim that the universe is expanding, and now perceived as not only expanding but at and increasingly accelerated rate? And the acceleration of the expansion can not be explained by Relativity without necesseties for unexplainables.
Big bang theory has in it logic an expansion that slows, not accelerates... True or false? Yet mainstream says its proven, expansion is accelerating. Einstein relativity said universe is static, then redshift was detected, and he changed relativity to expansion- all the rest followed that.
Redshift was the (mis) perception that preceeded expansionist etc.
See the example of O1, O2, O3 acceleraring to B for debunking the redshift that led Relativity 'predicting' expansion.
And, for now, until Snell decides to make public himself etc, i am perhaps as close to the actual 'document of the theory' you have access to. Instead of looking to that as a problem, he says its a luxury you unknowingly disregard.
Ask your questions, i/we will supply what advances validity. The theory stands on its own, i or Snell or anyone else is just parties regarding it. The theory is about relativty, the universe, physics etc- it has nothing to do with persons like Snell, me or Einstein.
Ask pertenant questions regarding the theory, as its been explained, and we will supply what evidence we have. We welcome all scientific inquiries or research.
Peace