Yes, but "lots of people" were not figureheads of the questioning. Tymoshenko was. There's no point in jailing "lots of people" when you can resolve the whole situation by jailing one.
To claim that she wasn't jailed for questioning the elections means to ignore the timeline of events.
Have another look at the timeline. My evidence indicates that the 2010 election was already given a big thumbs-up by both Ukraine's Central Election Commission and the EU's own election commission. The situation was already resolved. Tymoshenko was charged in May of 2011. It doesn't make sense to me that Yanukovych would jail Tymoshenko for questioning the legitimacy of his government after it had already been approved as legitimate. There's nothing to gain on that front.
It also makes little sense that Yanukovych would think that arresting Tymoshenko could 'resolve' international and domestic oversight of his election by the Ukraine Supreme Court, the Central Elections Commission, and the EU.
It makes a lot of sense to me that, at the height of his power, he jailed his primary political opponent of the last two decades on trumped-up felony charges to prevent her from being able to legally hold office. They've been adversaries for nearly two decades.
The fact that the West tried to maintain good "soft" relations with Russia in the past does nothing to substantiate your claim that Russia's wanton invasion is legitimate.
Where did I say that? That's not how I'm substantiating my claim. The issue for me is of Russia's legitimate national interests in Crimea and Yanukovych's legitimate claim to be the democratically elected ruler of Ukraine. If you believe as I do that an unconstitutional coup has overthrown a constitutionally elected government, then why shouldn't Russia, its neighbor and ally, get involved? Even if it didn't have an interest in controlling Crimea, it certainly has a legitimate interest in protecting both ethnic Russians in the region, and the government of a neighboring state.
Also, Russia's response has hardly been wanton. There's been no violence, and Russia has a well-known and explicit interest in the region.