Young horse broncing when asked to canter

[Horsegirl25]

Hi, just looking purely for advice and some opinions on an issue I am having. (Physio and teeth booked in, saddle recently fitted and had 3 month check)
Last night while riding my 5 year old Welsh sec D, I warmed up as I usually do, asked for canter on the right rein fine, asked for canter on the left rein he exploded ! Went completely under himself and shot forward broncing down the full long side of the school until we reached a corner where he dropped his shoulder and I went out the side door !
Now he has left me bruised and confused !! I had a friend on the ground who seen it all unfold, she says his ears were forward ( I have no idea if they were or not as I was clinging on for dear life ) and he did not seem in any type of pain at all and for this reason we thought he might just be fresh as he had the day before off. I decided to ask for canter at X as thought maybe when he sees the long side of the school he is wanting to run, same again just less of a rodeo, he became very light in my hands and hopped on the spot before doing a few rears and coming to a halt.
So now I am left wondering is he in pain? Was he just being a baby ? Should I just ride him through it ?
He will lunge away quite the thing no bucking or rearing on the lunge. I am just confused how he was able to do 2 laps of the school and circles in canter on the right rein but when asked on the left exploded ?
He is young, green and a typical welsh D, sharp and quick. I did not start him myself I bought him riding away, green but riding away and he has been doing just that until last night !

 

[Roxylola]

That extreme a reaction part way through a session would have me looking for pain

 

[Horsegirl25]

That extreme a reaction part way through a session would have me looking for pain

I was thinking pain but I don’t understand how he managed a canter no indication he was sore on the right rein but when asked on the left blew up

 

[Roxylola]

Muscular pain, saddle related, some crookedness in his way of going
What you describe isn't fresh, something hurts

 

[alibali]

I was thinking pain but I don’t understand how he managed a canter no indication he was sore on the right rein but when asked on the left blew up

Totally different muscles being used in different ways cornering right to cornering left. Also you could be sitting differently, none of us are symmetrical.

 

[Catbird]

I had similar with my 5 year old and turned out he had a slightly twisted pelvis and associated sore muscles. He showed no signs of anything being wrong beforehand but when I asked for canter he leapt and then bucked. We both ended up having physio for our pelvises ??

 

[TheMule]

I am struggling to understand how anyone could interpret a usually well-behaved and calm young horse broncing a full long side as not seeming to be in any sort of pain?!

Vet check would be my first port of call

 

[ycbm]

I was thinking pain but I don’t understand how he managed a canter no indication he was sore on the right rein but when asked on the left blew up

Canter as a pace is very asymmetric, for both horse and rider, unlike trot or walk. The stresses on the horse and use of the horse's legs are are totally different one way round from the other.
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[sbloom]

Canter as a pace is very asymmetric, for both horse and rider, unlike trot or walk. The stresses on the horse and use of the horse's legs are are totally different one way round from the other.
.

This - most horses are crooked, baby horses more so, and often aren't straightened, and posturally strengthened, before backing. Canter will usually be the most challenging pace if they're not at all straight. Saddle is implicated, it could easily be slipping left which would block him being able to turn to the left, though it could be any aspect of saddle fit. The most common saddle related cause of buking in canter is that the saddle is tipping back and/or running forwards, and bear in mind most people put the saddle on too far forwards, and therefore so often tipping back, as a matter of course.

 

[Regandal]

I’d get the saddle looked at. An old saddle fitter told me years ago that a saddle pinching at the front mimics a predator sinking their teeth in. Hence the explosive result. Not sure if that’s completely correct but I like it!