Bleugh. In addition to the interpretation you have suggested, using 'horned' as a verb, I initially read that sentence as the arrested man had been carrying both the lectern and the man with the horns.
My contribution today isn't really grammar; it's just using the wrong word, but I thought it might be appreciated here. An advert for a virtual running event invites participants to 'select 8 concurrent days' and run a particular distance on each of them. I think that's a much harder challenge than they intended.