Who knows how these things happen. Maybe a relative or a collector of that team was following the auction. Bidders don't always look at trends when they are bidding.
Sometimes things just go in cycles. I remember years ago I could put just about any tobacco card of actress Lily Langtry up on Ebay and be guaranteed at least a 100 bucks every time.
Now I look, and they rarely meet the $10-15 minimums they open with.