if alan had gone into the corner slower to allow the other guy room on the exit, he wouldnt have had enough overlap to 'present himself' to the other driver, and he would have got turned in on, resulting in a crash!
perfect manuver, had the other guy not tried to go round the outside, he probably could have lunged alan into the following right hander.
and anyway, the other guy probably went off track himself by getting power understeer when he booted the power!