Complex sentence: This Lasallain tradition being emulated by several rival schools in the UAAP and NCAA was done out of La Salle's defiant pride after suffering a very painful, winless NCAA basketball season several decades ago.
Split into simpler sentences: This Lasallain tradition is being emulated by several rival schools in the UAAP and NCAA. The decades old tradition was done out of La Salle's defiant pride after suffering a very painful, winless NCAA basketball season several decades ago.