Sorry to hear about your dude. I wish our roosters were that motivated. Even trimming his crest, our polish is practically blind so he's constantly being surprised by everything. He's useless for protection and frequently goes after our toddler. Our two silkie roosters are/were pretty timid, which is good and bad. Unfortunately our favorite (by appearance and temperment) was taken recently.
We didn't pick the roosters, we just ended up with the 3 because some of the chicks were unsexed. A well-tempered bantam would be nice.
We could fence them into a smaller area... but we like letting them roam around the property. Tough choices.