As of March 7 when I last visited Seymour (see posting by Kerry), it would have been marginally possible to ski; the road is a sheet of ice and the trail is snow/ice/rock. Snow out there was not as deep as usual this year. A group of three guys tried to ski, but got lost on the horse trail (camped in the hiking trail) and I think walked out in the rain.
Since then, weather has been mostly warm with little snow and more rain, so the trail would be worse, not better. From the summer trailhead there were lots of rocks sticking up on the trail and a few wet stream crossings.
It's only 23 miles round trip from the snowplow turnaround--walk, you'll get there in no time. If Cory says he is gonna bushwhack there, don't believe him.