Dear Sukhi,
You said in one of your posts that Adbhoot means unique. I am a Bangladesh Bengali and here Adbhoot doesn't mean unique. Here we use this term to mean weird. This word might have a totally different meaning in Hindi (I don't know), but in Bengali it means weird. It is used as somewhat of a derogatory term in Bengali. That's why I was surprised when AD called himself Adbhoot.
Dear Megs,
The points you presented about AD's motives are all plausible and logical. I have a theory as well, what if its a bit more far fetched (anything is possible in Ekta's serials)? What if JW and AD was very close friends at one point in their life. AD had a nice family of mom, dad and a sister. This sister was madly in love with JW, but JW didn't see her in that way at all. What if AD's sister committed suicide and left a note declaring her undying love of JW. Seeing her daughter die in such a horrific manner, the mom collapses and losses her mental stability (goes mad). The father blames it all on JW, mad with rage, gets a gun and goes to shot JW. JW trying his best to ward the dad off, shots the dad in self defence during the struggle. The police clear JW for this incident (self defence). AD comes to know all of this, goes to JW, blames his families' destruction on him and vows revenge. He tells JW that he will wait for JW to find his one true love (no matter how long it takes), take his love away from him and turn it against him.
This scenario explains why AD waited for 20 years for his revenge; it also explains why he might have framed Bani himself and then taken her away for 5 years. During these 5 years he brainwashed Bani and fuelled her hatred against JW. He told Bani yesterday not to trust him. Also, during these 20 years thoughts of rage and revenge might have created severe mental instability within AD himself. We are seeing the manifestations of this mental imbalance within AD now in the form of self mutilation and some what narcissistic behaviour.
Just my theory.
Sonia.