TGV trouble

So the bad news

Had some really troublesome news today. I had always planned to break the trike down ( it folds etc) and put it in a large bike bag and get the train TGV from Nice to St Malo about 10hours. 
Of all the days it appears that on the 30th of MAY, the day I should be getting this train, that route is closed for 4 days !!! and I HAVE to get back to St Malo for my ferry and to get back to work!!! 
The alternative now appears to looks like a 24 hour coach ride !!! and the sounds awful.