Repair Glued on hand? Advice appreciated!

Hello! I am a first time BJD owner and at a bit of a loss, trying not to succumb to anxiety about this. I am hoping this is the right place to put this thread, forgive a newbie if not!

I recently purchased my first doll, and I believe I am at least his third owner. I anticipated him needing a bit of TLC seeing as he is older and all but I am a bit over my head with this situation.

He has magnetic hands and one of his hands will not come off at all and I am worried it might have been glued on by a previous owner.
His other hand/wrist is missing a magnet and when I posted on the BJD sub-reddit for advice on repairing that, someone commented on there being a lot of glue residue which is why I have the worry that his other hand might be glued on.
Is it normal for magnet hands to be super super hard to remove? Am I just not trying hard enough? I will admit that I still have the jitters about potentially damaging him so I could be going at it too gently. But if the hand is indeed glued on, is there anything I can do to fix it or any suggestions at all for what to do?

Thank you so much, any and all suggestions are so appreciated!!

 

Thank you for the idea! I will try that when I get home tonight, with luck it will be hot glue and not super glue!

Thank you as well, if the hot water idea does not work I will definitely try this next!

Thank you both immensely, it means a lot to me!

 

Awesome! I definitely have a game plan then. Thank you so much!
Another question if it is okay. You mentioned dying dolls, my boy was dyed by a previous owner as well, would the hot water potentially damage the dye job or is there no need to worry? I totally did not think about that until you mentioned dye.

 

Okay, thank you so so much!! I really appreciate all the help and answers!!