I can't believe some of the comments here in a supposedly 'professional' forum.
Up to 100kts is regarded as slow speed abort and could even be considered routine. The fact that the pilot 'jammed on' the brakes is a function of the autobrake function on take off. Above 72kts the autobrake 'arms' itself and any subsequent closing of the thrust levers will automatically result in a full automatic brake application. With carbon brakes this can be fairly dramatic! (B.t.w the use of max autobrake is forbidden for landing so very few people have actually experienced it except in an abort.)
References to Perf A etc:
There is a small matter of a speed called V1 which with the sort of pax. number described here would have been about 130kts (dry) give or take. Before 100kts it is prudent to abandon take off for any reason, however small. Above 100kts and before V1 then he will only abandon the take off for engine fire, engine failure, or something which would affect the ability to get airborne (inc. sidestick failure(s) etc.)
In this case an 'amber caution' would have appeared and the captain would have simply closed the thrust levers, automatic brakes engage, he may or may not have even selected reverse thrust, and steered the aircraft to a halt. He would then put the cabin crew 'at stations' pending further instructions from him. Easy, and far from the heroics attested to here!
At V1 (which is the speed at which the first retarding action should have been taken and NOT a 'decision speed') even if an engine was to fail, it can accelerate to flying speed and safely get airborne. No big deal!
The engines are under the most stress during extreme power changes and most surges/stalls will occur in the early take off phase or at top of descent. It is very rare to see one let go when the power has stabilised.
The sparks that were saw were probably the turbine melting and being ejected, and the smoke/fumes in the cabin a combination of hot brakes and smoke ingestion through the air conditioning packs.
I little knowledge can be a dangerous thing and it pays to get things into perspective.
Hope this helps.