No. Letting off a little wild flame or two after the tension and excitement of the play, would hardly have earned me expulsion. Unless, I'd done so outside of curfew -- at most one might have received a sound caning for that.
As you well know, if one is an integral part of the sporting activities at certain classy schools -- they don't easily let one go.
No. I was a boarder and one of the teachers had a penchant for exploiting lonely boys. Along with abusing his authority by having me run errands at his every beck and call, he also took to belittling and demeaning me -- to the point where I could handle it no longer. I packed my rucksack, tossed my cheese cutter out onto the Junior school rugby field where I'd spent many an afternoon training and left the school -- and what might have been the best possible education I could have ever received.
Being absent outside of two weeks, I was warned to return or be expelled. I chose to remain hidden and finished my third year at a C-model school (co-ed -- nice) -- Unfortunately I was too wild (a child of the times) and during the first term of my fourth year there, I chose to crib directly from my Science book; was found out; got sent to see the headmaster; met him en-route and was sent packing with the stern words, "Never come back to this school!"