Jimtherev,
Agree entirely. I have proposed that ALL BA Unite members withhold their subs while the union support the BASSA strike action.
You may have seen copies of the letter that went out to Unite members attempting to justify the strike and my guess is they have already lost large numbers and they are getting worried, The only thing they understand is loss of power and income.
By resigning you demonstrate your support for the company and hit them where it hurts.