Any of those components could be dirty enough so that the car is trying to adjust itself to a false signal. Depending on driving conditions, this should be done between 50-100 thousand miles anyway, but most people don't and then sell the car off thinking it's tired. Since it woke up on the revving of the engine, I'd lean towards the MAF, but I look at it like a clutch and throw out bearing, if you're doing one, do them all.
A dying fuel pump would be more apt to show on a heavy acceleration, more often , they just die. I wouldn't runle it out, I'd just put it further down my list.
Whenever trouble shooting, start with the basics. If the system is in need of maintenance items, get them out of the way first, then see what problems are left. Unlike carburetors, EFI is a little more efficient, but more sensitive to maintenance needs. Anytime efficiency is increased on any mechanical system, the maintenance need is increased. The newer direct injection systems are more efficient and powerful than anything we've seen in an internal combustion engine, but I'm betting they're going to be a real pain in the butt in about 60-70 thousand miles.
