I read it in a local skate zine back in the day, and I'm 99% positive it was Carroll who spat. Not only on Tom, but also on the bank/flat/bank where Tom would land. Carroll couldn't stand that Tom was so good, and he couldn't stand the fact that the crowd was so close. It stressed him out, but he had a pretty good run though ...
Carroll was dissing Tom heavily with Chico.
That was at the 1994 contest, and the EMB-crew was not known for their "amicable" behaviour back then.
Apparently they were shut down a bit by Jeremy Wray.
In 1995 most of the girl/emb dudes were there again and they seemed to have reversed their thoughts on Tom ...
Henry Sanchez was there then as well, and was the complete opposite of the other EMB dudes.
He was giving Tom handshakes, he was psyched and he was hanging with the locals.
At least that's how I remember reading it ... I changed my mind about Chico but Carroll always stayed a bit "strange" to me.