Could we enjoy the Olympic Park in September?

It is ironic that, as Building Design reports, Rogers Stirk Harbour is having to abandon plans to exhibit a prefabricated house during September's London Design Festival because of the knock-on impact of the Olympics and Paralympics. “We identified two or three sites but we ran out of time finding the right site,” a spokeswoman said. “A lot have been taken up with Olympics things such as sites to store crowd barriers.”
The irony is that it would be easy to name some empty sites - those 'meanwhile uses' such as the Pleasure Gardens that have shut down because of lack of visitors. Their business plans have failed and everybody is very upset. Making them temporary venues for the LDF and putting the prefab house on one sounds superficially attractive - but in fact nobody will want to go to east London in September. The Olympic site will not only be shut, but will be crawling with contractors, involved in demolition.
Unless ... wouldn't it be great to keep it open in September, allow people who didn't get tickets to gawp at the venues and enjoy the planting, and put in some temporary uses for the LDF? Of course it would cost money, but without the international athletes, dignitaries and world press, a much lighter hand would be needed for security. What an end to a fabulous summer that would be.