I'd say
do try to fix his toes immediately. If they can't be fixed, he'll most likely have to be put down because of his level of pain, so this is a necessary thing to try.
So the amount of change to his toes isn't too drastic all at once, you could try taping pieces of pipe cleaners to his toes (but be careful that no sharp ends poke his feet, or he may get an injury with pain that would cause him to distort his walking more). You could bend the pipecleaners only partway toward correct position at first & gradually move more. I wouldn't take too long on the transition, though--his bones are growing and hardening fast.
If you don't have pipecleaners, you might try just wrapping his toes with thin strips of tape, gradually taping them straighter. Do a coule layers of wraps if needed, so it's stiff enough without becoming too bulky. Also, be careful to not doo wraps TOO tight, and that you change tape every couple days at least. There is info on using & removing tape on the
Poultry Podiatry page on my
PoultryPedia.com website.
I would lay paper towels over the top of his bedding for the next few days, so it's easier for him to step forward without his toes catching on shavings or other bedding. I'd change them frequently to minimize muck buildup on his feet.
If you need to separate him from the group of other chicks for a few days for this bedding plan to be practical, you might want to. There is a section with tips on this called "Separate from Others" on the Podiatry webpage. There is also info on giving aspirin in the Give Painkiller section. In his case, I'd scratch just a little bit of powder off the side of an aspirin pill & sprinkle on a treat for him. There are also other tips on the webpage that might be helpful, too.
He's under enough stress that as much special nutritional help as you can give him may REALLY make a difference. A little extra vitamins & electrolytes, unsweetened yogurt, tiny bits of soft (banana) or blended up fruit, etc.
I'm glad you did the hobbling. You may have a chance of still helping out this little guy.