" Miami can be a really rough place" this is definitely distorted thinking.
Your son has surely put himself into many rough neighborhoods, houses, cars, etc.
as an addict...and he managed his way out of them. Don't discount his survival skills.
You know that you can't keep doing what you're doing and expect diff. results.
Be sure you know if this is the right time to step in...or if it would be better to wait.
Sometimes we have to detach until we can see they are truly willing,
That being said: Once your son is dismissed from jail and if you have a rehab lined up and ready to receive him on the same day, with no stops at home...why not take him to treatment, especially if it is a long-term treatment.
For most of our young adult children...it takes many attempts at recovery. Unfortunately they have to hit some hard bottoms with some big consequences and know that there are no more bail-outs from family. Only then might they be willing. Once they are sober we still have to let them clean up the wreckage or their past on their own.