Honestly? Yes. Do I know that to be the case? No. I can't follow the logic that he would try to three different times to bring a team to St Louis with the plan to move them to LA. He has obviously had LA in his plans for a while now. 2010? I don't think so. 2012? Seems pretty likely.
I think he was planning this for years, how many well yes who knows, but he has been duping people and lying to them, and often through others, for a long, long time.
If we use some deductive reasoning I think it's fair to think this:
It's now documented (was a rumor before but not any more) that Kroenke asked a lot of questions about moving when he interviewed Fisher, and we can reasonably speculate one of those was "how did Bud keep it quiet". If I recall that interview was in early 2012.
I find it unlikely that he just decided after that 2011 season that he wanted to move the team.
In hindsight we can as of now set the line at 2012 because we know it was AT LEAST since then, but it was very likely the moment he greenmailed Khan then decided he was going to own the entire team.
I also wonder if Chip and Lucia knew or had dialogue with him about moving the team back to LA and maybe that influenced Kroenke to decide to finally use the option to match an outside off to them, not beat it just match it.
Lots to think about, but I would bet that he planned this from the start and in hindsight it's really harder to make a case that he didn't versus he did.