Truly some well-kept secrets of the trade, thanks for dropping the knowledge.

Reset SMC, which produced an even weirder effect - the temp is now 10 degrees C lower than before with the fan still doing it out at maximum at various speeds. Hit 62K at 54C once, the other it waited until I got to 64C. Overall, good to know. Anyway, this raises a question: at which temp is it OK for the fan to hit max speed? Should 70C be taped with "DO NOT CROSS" ribbon?

and @John: I think you may be right on the incorrect actual temp/displayed CMOS(SMC or whatever) data. I did that reset thing as suggested and the situation improved visibly, and I doubt it's because that actually made my laptop cooler whatsoever.

Also, where did you get your green drive - it's not on ifixit - I dont see it?

Repeatedly, hehe

Posfutur