You propose a criminal act to achieve your hypothetical aim so no I wouldn't support you. I would support you if you walked out because you are underpaid or overworked or undervalued but you're not. You're simply envious of others who get more than you. You're a very greedy boy.
Meanwhile, it is more than likely that a tube driver uses his £40k to feed and clothe a family, keep them warm, pay the mortgage etc (and in London). They are not overpaid; the majority of working people are underpaid. To redress that balance, I support their getting together in a Union and making it happen. Roll on the strikes if they're necessary and sod Cable's threats.
If anyone goes to jail, Ken Clarke will halve their sentence anyway. Bloody shambles.