That's not the story I've ever heard. Jacobs called it Spyder because the first pants were referred to as "spider pants" by the racers.I know the Spyder owner. His son married my ex wife's best friend. The son owns it now I believe.
What a life she got, traveling to all the trade shows, skiing.
The owner was deathly afraid of black widows, so to over come his fear he had one in his office and hence the name of the brand. Little trivia for you double planker, wanker yankers, and knuckle draggers.