I have no idea what a gladiator is. do you see where the roots were on those bulbs ??? that's the bottom. I had some Korean cloves that looked worse than that when I got them, I planted them and they grew just fine. Plant them, they will grow.

I believe this forum is mostly for garlic and onion growers. It should be called the Edible Allium Forum. Anyway, I have found that some of the large allium flower bulbs such as Gladiator don't produce big flowers for very many years. The flowers seem to get smaller every year. I would highly recommend A. Globemaster as it produces a large flower every year, doesn't set seed. but the bulb does divide in half, so you get two bulbs the next year. In my neck of the woods (southern Ontario Canada) they sell for $10-12 each, and are available for sale in the fall.

Your Gladiator bulbs don't look that great, but then you didn't pay very much for them either. I would definitely plant them and see what you get in the spring. They may or may not be the same , i.e. true Gladiator plants. In the fall look for Globemaster.

Here is a link that might be useful: alliums Gladiator and Globemaster

Possibly make some homemade fungicide and spray the plant and some of the ground after the plant has been well established. It may have had a fungus.