Stripes from bright sources prominent in the final J-band stack. Don't see the claw marks in the original images but they appear to be in individual reduced images.
Image above is final stack of MMIRS J-band imaging in /data/MMT/MMIRS/GRB250114B_J_host/sGRB250114B_J/2026.0103/ on burbidge. Was reduced in the potpyri environment. Don't see same pattern in K-band final stack from data taken the same night.