Yes, though Miami won't stay with Love long in that scenario.Alternatively there's the keep your foot on the gas and don't let them get any momentum approach.
I think there's a good argument to going back to DW in the starting lineup because then Love has to guard Tatum. With one big there's no where to hide him. I'm not sure there's a great matchup for Grant in this series.
The biggest question for me is whether, defensively, the Celtics believe their best setup vs Miami is two big (which has the benefit of someone being able to provide help/rim protection/d rebounding even when Bam is floating around mid-post or outside) or not. The answer to that should drive the lineup, because the D is what will really get this team where it needs to go. Also, Miami just doesn't have that much in the way of bigs. Bam will play a lot (35 min a game in post-season) but behind him you have Love (20 min a game in post-season) and Zeller (9 min). So they are going small a lot already, with Butler at the 4.
My guess? Celtics are really versatile and this lets them try both ways. I suspect Celtics will want a lot of two big when Miami has two out there and sometimes even when it's just Bam. They'll use Grant more this series to help get there, perhaps trying to focus TL minutes when Bam is off the court (using Grant a lot when Bam is out there). They'll go smaller with one big as a change-up and if that really works they may stick with it, but my guess is they prefer size here as a default, and if that doesn't work vs Miami's small lineups Celts are very well situated to switch to one big.
The other thing I'll watch is how effectively Celts hunt the Strus/Robinson slot (one of them usually on court for Miami with Herro out). I am guessing Miami will try to mix up defenses so neither is a primary defender of JB, and perhaps they'll try to put one on Smart or White when possible. Celts should hunt that in PnR and be winning to post up Robinson even wtih Smart. Strus is sturdier, but it's still a weak defender given Celtics offensive talent.