Hi drgingersnaps, sorry for the delay.
At first congratulation, you have found one of two hidden flashback: The beach.
The entire game is based on remembering what happened to the protagonist through the flashbacks, and in this demo we have hidden two: who plays the demo is free to interpret these flashbacks as he wants.
You have found the first flashback, the beach, we hope that you will find the second flashback (it seems that still no one has actually found).
So if you want keep looking these flashbacks, good luck and let us know!