Humans do not freeze immediately upon contact with the vacuum of outer space, neither does water, these are very common misconceptions. All Archer would suffer from the seconds he is exposed to space is hypoxia, burst capillaries and possible tissue damage from the explosive decompression, and the moisture in the escaping atmosphere would just boil away. Space, while reading as very cold by a thermometer, technically has no temperature since it is a function of heat energy in a given amount of matter, and space by definition has no matter. Plus heat transfer doesn't occur the same in space, with no matter there is no conduction or convection, it would actually take anywhere from 12 hours to a full day for a body to freeze solid, depending on how far from the nearest star it is.
Prior to the core decompressing Archer is shown hyperventilating and holding his breath, which is something a person with EVA and spaceflight training would know never to do, their training would be to do the direct opposite. In a vacuum air rapidly expands, so in the case of explosive decompression any air in the lungs would rapidly expand and rupture them causing massive tissue damage and death, which would make it critical to exhale immediately prior to decompression. Plus in a vacuum oxygen rapidly defuses out of the lungs and bloodstream, hyperventilating to saturate the lungs with additional oxygen prior to decompression would not help, any oxygen in the lungs would instantly be gone and unconsciousness would occur in less than 15 seconds.
The Universal translator does not translate the Klingon word Qapla' when the Klingon patrol ends the transmission with Enterprise.
At around 40 minutes when Malik throws Soong to the floor, the close up shot of Malik's face is flipped. The bloody, injured part is the right side of his face in the shots before and after, but on the left side in the close up.