I tried letting the demos play through and the first time the zombie got pushed into the hole, but the second time he got killed by the pitchfork. Is this what you mean by "out of sync"?
I think that it may just be the way the demo works because I got the exact same behaviour on two different machines.

BTW, both machines are running DOSBox as I don't have a DOS machine to test this.

the zombie is NOT killed with the pitchfork though which screws the whole replay over... the zombie rises up (like they do >.>) and chases the player thus screwing up the players movement since it blocks the player etc. and it deals damage.

you're probably playing the demo on a mismatched version it's not intended for. technically it's a non-dosbox issue

Ya but the problem does not arise on the first play. only does it screw up after it loops.

well check it on a real machine, though doubt anybody cares