Aeonium arboreum is monocarpic per stem in my experience (as are many other Aeonium spp). This means stems die after blooming. However, on the plus side, many aeoniums do branch or "pup", meaning you can often start or continue the plant via its non-blooming branches or offsets.

If the plant has branched, you can cut off and re-root the rosettes which have not flowered. Or you can just cut back the stem which has flowered, leaving only firm stock or branches closer to the base. If the plant has healthy, non-flowering stems, they should survive.

However, if your plant had only a single rosette and this stem flowered, your plant has probably expended all its energy in blooming and reached the end of its days. Add to that your observation that it is "completely dried out now" and it's likely this plant has reached an end.
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DC, Los Angeles, CA
Member CSSA, San Gabriel Valley CSS

dcelzinga- the flowering stem is dry and turned brown and hard.. i say "completely" because its very hard to the touch and it is a single rosette :(- thank you so much for your advice- i will cut back and leave it to hopefully re root.