it sounds a bit different in Belgian press today:
"I'm mainly refering to Thursday's stage, where I lost 2 minutes although an Ardennes-type parcours normally should have suited me. But I was way too relaxed. I thought the favourites would keep things together, and a Matthews-type of rider would win the stage. If I or the team would have approached it with more balls and taken the initiative, there's no way I would have lost 2 minutes. Physically and mentally we have messed it up. A total offday.
In that way I still differ compared to a rider like Geraint Thomas. He always races aggressively and alert, while I wasn't even prepared for the heat that day. I had the wrong helmet - you could fry an egg on it in the end. I didn't have any ice either, because I thought it wasn't necessary. Fortunately I'm learning quickly, and I'm not going to make that mistake again."
But well, not ideal indeed of course, and details like this can make a difference - but not if you get dropped on every climb anyway, and tbh by 2nd or 3rd class of GC riders. Not sure he has realized that.
edit: no Burgos for him anymore, btw: "At this level you have to save as much energy as possible. [...] That is why I go for Vuelta for a different approach. After my offday Thursday we immediately decided that I will take the Tour of Burgos off my schedule. I want to be as fresh as possible for the Vuelta"