I put this on during a break so maybe more doomy than I meant; to be fair there are a few more minor things it could be as well. If he did have only a deep laceration in a volar crease the therapist could have them in flexion to help healing. I’ve certainly done that before, I’ve seen heavy scabbing in some wounds last for 6+ weeks. Usually when I make those splints though, its for a dislocation with some level of instability; volar plate sprain or tendon disruption.
Lets say it was a dislocation – he could be fully stable at 30 degrees of flexion to full flexion and could be released by his provider to play with splints protecting him from extending fully. but he would still have some level of swelling and pain. If this was the case I would not expect him to feel 100%