For jittery bits you could always use the ‘posterize time’ filter for certain parts and to get the roll, use ‘the wiggler’ on bits. Certain sections you could also duplicate and use different blending modes-like ‘multiply’ for a darker harsher look for certain parts. There’s also noise for simple and instant destruction. It doesn’t always look brilliant, but coupled with a standard ‘posterize’ effect it can sometimes work. Using a ‘Fractal noise’ layer over your main layer and blended sometimes looks interesting. If you set it to ‘Blocks’ and get it moving quickly (animate the evoloution parameter), then make it really high contrast and reasonably low opacity (on the actual layer) it can give a weird kinda diginal noise-like pixellation. Not sure if any of this’ll help, just throwing out some ideas…