Is it possible that the authors of Bitcoin have an alternative way of generating bitcoins? Is it possible that the Bitcoin creator (or developers) have an algorithm that allows computers to generate coins easily, but intentionally published only the current difficult mining algorithms. And, in that way, have left themselves a backdoor way of generating bitcoins once the algorithm became popular?
Your question is equivalent to asking, "Does SHA256d have a trapdoor?"

SHA256d is a well studied algorithm.  It's believed not to have a trapdoor.

If the creator of bitcoin has a way to break SHA256d, stealing all our bitcoins would be the least of our worries.