Don't know about anybody else but I would still be nervous after I got a replacement that it could happen still. The paranoid in me I guess.
All lithium-ion batteries can and do explode. There have been reports of this thing happening to many different phones even iPhones. I'd say you assume some risk by charging any phone.
I won't worry once I get my new phone. Until then I still won't worry much, but I'll keep an eye on it while charging.