Though only a neck down to Quaddick Lake at the line, his mount barely had time to lose momentum and seemed beaten regardless.
Jacob - Paul Nicholls' under-study to Ruby Walsh- will count himself unfortunate to be suspended throughout the Christmas and New Year holiday programme.
The dates of his suspension will mean he will sit out December 20-22, 26-31 and January 1.
With Walsh likely to have commitments at Leopardstown, Jacob is likely to miss several lucrative opportunities for Champion trainer Nicholls.
Jacob, incidentally, rode Nicholls' Kauto Stone to victory in last month's Down Royal Festival feature, the JNwine.com Champion Chase.
He was in line for the mount on Kauto Stone in the King George VI Chase at Kempton on Boxing Day. Jacob may yet decide to appeal the decision.