No, they were most likely NOT trying to be heores, its simply the standard thing to do. An aircraft is supposed to be able to take off with one engine inop, and at this speed the expected behaviour is to continue takeoff because that is what has been deemed safest.
There is always a grey area where the decision could go either way, stop or lift off and in this case it looks to me that trying to stop might have been better. But that is literally impossible to diagnose during the few seconds they had.