If they go for "broke" and win the rest of the games, I don't think we should give much credit to the argument, that the team wants HCA in the East, or over say, Miami. However, given that the team meets "tough" opposition, plus the worst team in the league, I don't think it is unrealistic. If we had met the Bucks and Grizzlies of the league, I would highly doubt it.
First of all, I don't think that matters much. The team proved last season that they can play on the road, and Miami have proved throughout the regular season that their fanbase is not intimidating.
They are currently one game behind being tied with the Lakers, and I'm sure that if they are gunning for winning the rest, it would be to ensure HCA against Lakers, and no one else. That is an argument I could buy.