I agree with ATC on this... If it was something random that happened and even the team didn't know about, then whatever, it's racing and things break on the cars like that but knowing that the wheel is loose and not tell him to park it is just stupid... The penalty may be harsh but they have to do what they have to do to get people to follow the rules and avoid unessecary danger...
I think that Alonso will be replacing Massa next race for his home Grand Prix. Off course Ferrari won't object since they know he's a great driver and I doupt Renault will say anything about it, they'll understand.