The eight-year-old seemingly had the race won jumping the last, but he then veered across the track and almost pulled himself up to a walk before regaining his momentum when fellow Nicky Henderson inmate Whisper laid down a last-gasp challenge.
De Boinville's mount eventually won by a nose, but the rider felt Might Bite's performance compared favourably with his 2015 Cheltenham Gold Cup victor Coneygree.
The jockey told his 32Red blog: "Obviously, a lot of people have focused on what happened after the last but he actually tried to pull himself up going past the stands with a lap to go.
"He gave himself a breather there, a good breather, and I had to ask him to go on again after the water jump.
"He kicked on again in a manner very similar to Coneygree and he absolutely winged the second-last.
"I saw the same stride at the last but he lost concentration - he had one eye on the entrance - and put down on me.
"Some have suggested he emptied out on the run-in but to do what he did - to basically go from a standing start to galloping again in such a short space of time - is definitely not the sign of a tired horse.
"We have a horse of immense potential to look forward to now."