@Krakatoa I figured out the issue. One of the files got corrupted when it crashed. Running chkdsk in windows fixed the issue and i can now read/write.

Also, I decided to switch from FAT32 to NTFS to hopefully avoid this situation going forward. Maybe its placebo, but it somehow seems faster now.....

@efriim

Have used these instructions a few times and worked well.
https://medium.com/@andreas.schallwig/how-to-make-your-raspberry-pi-file-system-read-only-raspbian-stretch-80c0f7be7353

@edmaul69 Thank you, problem solved. Hopefully this will help people in the future.