The oppositon's goal has been crystal clear for some time: to find some way to overthrow the government and worm their way back into the perky-cushy-comfy halls of power. The budget thing was the latest attempt. Petru I think it was even openly mentioned that if the budget is not aodpted on time, THE PRESIDENT MAY DISSOLVE PARLIAMENT.
Meanwhile, as a result of their poor support figures, they are trying to provoke a physical crackdown on the opposition which they believe will make more Poles believe their phony-baloney about creeping fascism and suchlike. Recently they have even resorted to physical abuse of government officials and PiS MPs, shouting them down, blaring horns into their ears, poking, shoving and tussling as well as chasing away the speaker of hte Sejm, disrupting palriamentary procdeedings, occuping parliament and holding MPs and government offficials captive in the building by physically blocking exists. It's only half a step away from Komorowskis's "bonking the government over the head with a wooden plank" or Wałęsa's helping cabinet members jump out of upper-storey URM windows.
The bottom line is that the OPPOSITION HAD NEVER ACCEPTED THE DEMOCRATIC VERDICT OF THE POLISH PEOPLE, fallaciously believing that despite their elitism, favouritism and scamsterism they would be allowed to rule forever.