I've done it both ways. I always feel smarter when I use the vice grips but I really hate crawling under my bus and I really like the noise and sparks and beating on metal --its got more animal energy or something and its dangerous and the bus could catch fire or I could hit myself with the hammer or lose an eye etc.
Yea thats why I like the Bansils method best--and its why I have health insurance--and have had to use it, repeatedly
All kidding aside, the grinder is the way to go. My two cents worth. Jack