No. The receive side of the LatticeSC/M Ethernet flexiMAC MACO IP will compute CRC on the whole ethernet packet prior to removing data pads. Hence, the computed CRC will match the CRC bytes in the frame prior to pad removal. For more information, please see our Ethernet flexiMAC MACO IP website where you can get documention on the user's guide for this IP:
IPUG48 "LatticeSCM Ethernet flexiMAC MACO Core".