Sounds like you did have a nice trip. It is nice to be able to get teh different view from the tracks

I believe should should get some sort of credit from Via. At least according to their website

"Trains replaced by buses
In exceptional circumstances (e.g., when track works cause a section of track to be taken out of service), buses may be used to ensure connections between one or more of our stations. For the portion of the trip made by bus, we will grant you a travel credit equal to 50% of the rate (taxes not included) you would have paid to travel the same distance by train. In Sleeper class, the travel credit is equal to half the price you would have paid in Comfort class (Economy).

Only the segment of your trip travelled by bus will be considered.

As an example, if you are travelling from Montréal to Québec City and must complete the Saint-Hyacinthe/Montréal leg of your trip by bus, you may obtain a credit equal to 50% of the amount you would have paid (taxes not included) for a journey between Saint-Hyacinthe and Montréal."


http://www.viarail.ca/planner/en_plan_aide_reta.html

If you don't have a use for the credit, perhaps a trade could be worked out.