I am not always the best at describing genetics, but I'll give it a try (just a reminder though, Autosexing is different from sex links). Short answer, yes.
Solid rooster over barred hen: hen gives Barring to cockerel offspring only, resulting in solid pullets and cockerels with head spots.
Solid (other than white or silver) rooster over silver gene hen: hen gives silver to cockerel offspring only, resulting in pullets the color of the rooster and white/yellow down cockerels.
Barred roosters give all offspring barring (pullets would be complete with 1 dose, cockerels incomplete with only 1 dose of barring). If bred with a solid silver hen, the hen again gives silver to cockerels, resulting in black with white headspot pullets and white/yellow down cockerels.
Now Autosexing is a horse of another color. It is inheritable and will remain intact in pure breeds, unless poorly marked chicks are used over and over again. In Legbars, both parents are barred (B) on top of wild type pattern, so cockerels have 2 doses of barring which should wash their wild type pattern out and pullets have one dose of barring producing clearer stripes. Both chicks can have white headspots, though the male should be significantly larger and brighter than the female since brown wild type has been combined with barring. The original Gold Legbars were selected for large headspots on the cockerels and no headspots on the pullets to make sexing easiest. By the time the Cream Legbar was created, with more breeds added in, and standardized the small spot was ok for pullets.
It is entirely possible that a very clearly striped cockerel is missing a dose of barring from one of his parents, but it's also possible that the down just came out a bit weird because sometimes that happens despite genetic statistics LOL!