Im going against the grain here, if I was Constitutions owner id let him run.
But, rather than being up with the pace, drop him out and let him gain confidence over the first four hurdles.
That way hes not taking them at championship speed to start with and can grow into the race. If he was not comfortable jumping during the race, pull him up. Istabraq’s last race at Cheltenham was just a jog round.
Then if in contention coming down the hill, then use that kick he showed on Friday night after the last flight and catch those trees that are entered, as its a poor race this year. 
