I'm no expert on mead, but I think 1.050 seems way too high! And as you say, extremely sweet. The recipe for JAOM says FG ~1.030. Have you bottled it? If so, I'd say there's a high risk of bottle bombs. What was the OG? At 1.050 there's definitely still lots of sugar left for the yeast to eat.
The Primaries: Apfelwein | Liquid Light IPA | Dark Star Stout
On tap[-a-draft]: Liquid Light (Aurora)
Aging: The Eleven [Barley Wine [normal+oak'd]] | In The Court of the Crimson King [Raspberry Apfelwein] | Lighthouse Girl [Orange Mead]
Planning: Wit, Porter, more apfelwein and mead.