You can get out the wall if the button is pressed again, which should always be possible, but I definitely should have included a level reset button in case there's ever a situation where it is not. Glad you enjoyed the game other than that!
Not sure exactly how it happened, but in 1 level both the player and the only orange block got physically stuck in a blue wall. I think I had the button pressed down, then we moved up into the area that the wall spawns into causing both blocks to get stuck. Trying to change gravity did nothing. Definitely not something I blame you for in a jam game, but something to investigate if you go forward with this