Is your inference that matter and energy are continually being created? I am a little at a loss to understand your point.
Regarding the heat signature, I will simply quote Robert Jastrow, "No explaination other than the Big Bang has been gound for the fireball radiation. The clincher, which has convinced almost the last Doubting Thomaas, is that the radiation discovered by Penzias and Wilson has exactly the pattern of wavelengths expected for thelight and heat produced in a great explosion. Supporters of the steady state theory (Hoyle) have tried desperately to find an alternativce explaination but they have failed. At the present time, the Big Bang theory has no competetors".
Hawking said, of Smoot's projects findings, it is the "The Holy Grail of Cosmology".
If you can, through physics, regress the orignation of the universe, beyond the moment of creation, please explain.