HELP, substrate stuck in mouth.

I wouldnt worry too much about impaction. Now if the snake was dehydrated, thats a different story but a well hydrated snake shouldnt have a problem passing a little substrate here and there. I used to worry a lot too but after seeing some of the stuff my snakes have eaten by accident, i really dont worry much anymore lol.

Thank you for the replies. I would have just left him alone and let him swallow it, but he was becoming agitated. He would not go in his hide and lay down for about an hour because he was continuously opening his mouth, rubbing his face on things, and trying to dig his face into the substrate. I could tell he was very uncomfortable, which is why I tried to get it out. I tried to open his mouth and it worked for a moment, but not long enough. His neck is very small in comparison to my fingers, so I was afraid of hurting him, which I admiit got the best of me and made me give up trying for the night. When I put him back, he drinked water for about 5 whole minutes and went to his hide for the night. It's now the next morning and he seems to be more comfortable. I haven't seen him opening his mouth and he drinked some more water while moving over to his other hide. If he seems okay now, should I try again to look in his mouth or should I just leave him alone and let him deal with it on his own?

If he seems fine just let him be to digest. Keep an eye on him and if anything changes go from there