Hmm I've never had aspen get stuck in my red tail boa or ball pythons noses ever and my red tail loves to destroy her cage and push the aspen all over. But if it is getting stuck in yours, then yes I would probably switch. I like aspen for the fact its cheap and since I do full cage cleanings every month or 2 months at the most, it doesn't break the bank to buy 3 bags every month. Plus it absorbs piss pretty good.
I'm curious how did your snake get aspen lodged in her nose? I mean sometimes my red tail gets dust or some particulate in her nose but you know it when she does as she does a big huff and expels a bunch of air clearing her nose. She does sometimes make a slight whistling noise when she is ready to shed but I attribute that to just the skin inside her nose holes are loosening up. You can tell an RI from just a whistle. RI has a gurgling wet sound where as the shed whistle is just a crisp whistle. But anyways im curious as I know in the wild they root around into rodent burrows and dirt holes, termite mounds and stuff like that so im sure they get that stuff in their nose too but like I said, they probably just huff and expel/clear their nostrils.