i just cut mine- ive always cut my roots back, especially before i start to flower, because once i start flower the roots get huge- and i usually cant lift the lid to cut the roots, plus i dont want to whilst in flower lol.
cutting roots is perfectly fine. obviously it is still stressful, some more than others. but its very natural and plants are used to damaged roots and loosing roots quite often.
if they are from seed do not cut any of the 3 main roots. but yea i would cut them if i were u defintely, then throw some panty hose over that thing like kade said. never done it but sounds good.
i usually cut my roots back about 3 times before i flower given growth, etc
Cheers!