I am not going to comment on my feelings towards this lore as I have a rather large bias when it comes to healing magic. Though I would like to note that one with full control of water and ice would be able to do this. If anyone is interested in the science of it I highly recommend looking up Wood Frogs from back in the /real world/. It is possible for an organism to freeze solid and have all of it's organs stop functioning for a set period of time. It is where the water freezes that determines if the organism can return to original function. For the frogs when summer thaw comes the animals organs nearly magically restart.
Since this is a role play server the nitty gritty doesn't need to be looked into but I dare say this is fully possible in the realm of LOTC. While it can't work from the current water evo. since a realistic process requires the movement of the pre-existing liquid within the body to be manipulated... but still cryogenics are fully possible in a living organism if the right requirements are met.