Thanks, I did notice that... Not sure why that's relevant though -- especially since you also felt the need to share your opinion. Sine I came across this thread by trying to figure out how to remove my cog despite heavily bonded Loctite, it is still clearly relevant and will be until people stop trying to convert freewheel hubs to fixed (which I don't foresee happening). As such, I thought my experience with a virtually welded cog from blue Loctite may help some other desperate soul who doesn't like their gear ratio, while concomitantly demonstrating the safety of such a design (with a front brake as a failsafe, of course).

UPDATE:
Good news is that I managed to get the old 16T cog removed! It took a lot of heat, an old chain (since I busted my chain whip), some vice-grips, a hammer, and some swing endurance (took about 1000 hammer strikes ), but the cog finally released. No damage to the hub or its threads, but the wheel is slightly out of true. Easy fix -- not a bad trade-off for longer tire life.

UPDATE:
Tried to use less Loctite this time so that I could remove the cog in the future... Spun the cog off at a stop sign! That's why I always run a front brake... Lathered on the Loctite again and I haven't had a problem since. However, that cog is never coming off.