The events mights be as follows,
Lax & VR go & see the prada lady who is not Bhu..VR tells Lax to be calm and change his dress...after changing dress they come and during some ritual the police come and arrest Lax (i dont thnk Sundari will be arrested). Tamil/VR/akhil/praba go to the PS (with lawyer)..can not be released...Lax decides Praba should get married because a marriage should happen at all means..prestige prob...it is also a possibilty that bhuvana surrendered to the police & included Lax's name..