Our guys who just competed a year of L5 are primarily getting spotted on rings and Pbars when the coach is working on their swings with them, but they do a lot of swinging without spots on both events now. One of their frequent drills is swing to handstand several times in a row on Pbars, which they usually do unspotted. They learned the forward roll out of handstand last fall, and two of them executed it successfully in a meet after overbalancing a handstand. They have had their grips for a while now, but I don't remember the coach doing a lot of extra spotting after they'd had them for a week or so, even though some of them were still complaining about them.
I'm so sorry about your son's accident. That's a tough one. But unfortunately I think it is just something that comes with the territory. As I know from sad experience, some things on beam are also hard to spot and a child who's done a particular skill several times and missed it several times safely can have that really unlucky landing that puts her/him in the ER. I hope the dislocation isn't severe and that he heals up quickly. All good thoughts.