My mother is in her 80's. She lives in rural Iowa, does not own a television, and her favorite basketball player is "that Michael Johnson." (She means Jordan.)
She knows Cleveland fans are worked up into a lather over the prospect of Lebron going back home. This is not an exaggeration. She heard it on the radio. She thinks it's "nice."
If she knows this, we can be fairly confident Lebron does too. It would have taken no more than a whisper of an officially sanctioned rumor from a friend of his agent to quash this BS days ago if he intended to stay in Miami, and nobody would have blamed him a bit. But by now, with the media and the public having raged on, staged stakeouts, and turned the entire greater Cleveland area into Lebronfest 2014 - The Return of the King for the last five days...with the Cleveland Cavaliers having gone through all sorts of cap and roster gymnastics in ways that only make sense if we assume they've been prompted by the James camp...I think we can confidently say that it is Lebron's camp's clear intent to give Cleveland hope.
Now, the intent may very well (and justifiably) be to take a massive and public dump all over the head of Dan Gilbert, but it's gone on long and publicly enough that it's going to get all over the public that was ready to love him all over again, too.
I think Lebron either goes home to Cleveland, or has to just turn full-on heel at this point, because I think by now he's earned any hatred coming his way if he screws those poor shmucks over in humiliatingly public fashion again. It's way too late to play the "all I did was stay quiet about it" card, IMO. That's part of the hazard of being the most visible and media-driving force in all of pro sports.
ETA: If he genuinely is torturing over the decision, and is having honest-to-god heart to hearts with friends and family and God about it, then a tweet to that effect from @KingJames would have more than sufficed.