To some extent they already have, Bob Fernley was the man put in charge of the whole project and he's left McLaren with immediate effect. Zac Brown put him in charge so he could concentrate on the F1 team. Which in my view was the right way to do it (ex Force India Boss). Why things fell apart the way they did is ultimately down to Bob as he was in charge, however Zac is at the top of the management structure of course.
The link with Carlin didn't work, ok it's better than nothing and any support is good but they were both in the same boat experience wise and that simply didn't help. As it happened of course Carlin failed as well. Why they linked with another rookie team I'm not sure but that didn't help at all.
When I read that McLaren were running their own car I knew immediately it would be hard work for them, they are a top team of course but as others have mentioned this is a complete unknown for them, racing at Indy is a science in itself and it takes some teams many years before they properly know what to do. So if Alonso had qualified in the top 20 and finished I think they would have been happy with that. Alonso wouldn't have been of course but a win would have been impossible with the experience the other teams have.
It reminds me of new teams that decide to do Le Mans about four months before the race, you just know that they will face an uphill battle, in some cases they don't make it past qualifying as well.
The whole car colour issue is just plain weird to me. It was practice, just get the car out with the sponsors on. Track time is everything during the month of May and the constant changing weather was playing havoc with all the teams. Even if it was carbon black with sponsors in white vinyl that would have been fine. The team needed the track time more than anything.
Finally though, and I'm not trying to defend the team but the margins as so, so close now. Everyone in that field was covered by a small amount of time, which is great to see but of course it makes it even tougher for those that don't make it.
I'm been watching the daily YouTube vids with Marshall Pruett and Sebastian Bordais and he said practice and qualifying was just very tough for everyone. The weather kept changing, the wind direction kept changing (so some had tailwinds, others had headwinds on their runs). They've had constant rain, sun, storms, just about everything during the last few weeks. It hasn't been plain sailing for any of the teams.
I wouldn't be surprised if the weather spoils things come Sunday. At the moment it's showing 60-70% chance of rain on Sunday.
What I would like to see is McLaren, dust themselves down, pick themselves up and run the car at some events this year. Alonso would love Road America for example and it would generate good publicity for the series and bring the crowds in more.
On a completely different note, well done to all the small teams that have made it in. I listened to a great interview with Pippa Mann last year about the work she has to do every year to get into the race, the amount of hours and graft to get sponsors and so on. They all deserve to be there come Sunday.