I typed
Yankees Royals Jeter Damon followthrough
into Google. The first entry is this Official Forum thread, and the second is this link:
http://www.sportsline.com/mcc/messages/thread/9948265
It appears to be a thread (40 pages!) in which people are commenting on the game as it happens. Here's a 3 consecutive posts:
1:50 pm Ponson is getting all the Royals hitters to swing early in the count..Jeter with a horrible error
1:55 pm Damon hits it hard so it's scored a base hit...Yankees gotta get somethin going here
1:58 pm WTF.
That was Jeters follow through that hit Buck....Now instead of being 1-1, its 1st and 2nd...wow
Absent an elaborate cover-up effort (by MLB? Wally Bell?) involving fake posts, I'd say that at least one TV observer of the game saw something or heard commentary that supports the call.