Finally got it home, wouldn't start as usual. I pulled the O2s and got it to start 3 times. I put them back in and got it to start 2 times before parking it as not to make the neighbors cranky.
Something is still not quite right. It's a bit louder than usual and the sound it is making is very near to the motorcycle-y sound I heard the other day, though I didn't originally hear it from the outside.
I recorded the car from both ends in the hopes someone will recognize something.
https://youtu.be/pqWukDSq8SY