Oh my, sorry to hear your frog isn't well. Is the splinter sticking into him so you can see it totally or is it sticking out of him? And do you mean just so I understand correctly that what ever it is has broke skin? if you could take a picture a post it to site like photobucket or something similar that would be very helpful. And no he shouldn't be face planting when jumping. Keep him in the tank with moist paper towels for now a water bowl and I would say I fake plant but im not sure because I wouldn't want him to hit the plant were this thing is and make it worse. What side is it on? If its comeing through from the inside the left side is the stomach and the rightside is the intestine. Again a picture is worth a thousand words, and no matter what he will need to see a vet asap by the sounds things. Oh and I wouldn't pull it out, doesn't sound the best thing. And hopefully a moderator will see this and move the thread and if not if you repost this in the pacman part of the forum some of the really experienced members with pacmans may see it and be able to help out, but again by the sounds of it this little guy is going to need a vet. And even if pooped fine it could still be the piece of wood, it may not have been in the intestine at the time he had his poop.