Similar behavior is often seem at the Greater Cleveland Shiva Vishnu Temple in Parma, Ohio. As soon as the aarti bhajan is over, desis make a dash to the north side of the temple to be among the first in the line for the aarti. I suppose some are eager to get to the food at the lower level and then head home and watch TV and some do it out of instinct.
Bandar kitna bhi boodha ho jai, kulati marna nahi bhoolta.