The reports indicate that there was a tire failure on takeoff with subsequent smoke and fumes entering the cabin. Now, those smoke and fumes could have been relatively harmless aftereffects of the blown tires or it could have been the beginning of an uncontained fire in the wheel well. The aircraft was evacuated after landing using the slides, so that gives you an idea of how serious they considered the problem. Once there is a hint of an uncontrolled fire, the number one job of the crew was to get the aircraft on the ground as quickly and safely as possible, and any inconvenience to the airport should not have even entered their minds.