As the television cameras had not captured his crash, team boss Ron Dennis did not know what had caused his DNF until then, though Prost speculated that judging from the tyre marks, it appeared as though Senna had clipped the inside barrier at Portiers, which pitched him into the outside guard rail.
Como as cámaras de televisión non captaran o seu accidente, o xefe do equipo Ron Dennis non sabía o que causara a súa retirada ata entón, aínda que Prost especulou, que a xulgar polas marcas dos pneumáticos, parecía coma se Senna recortara a barreira no interior de portiers, o que o lanzou contra o garda rail exterior.