You're implying that I shouldn't assume things or catastrophe awaits, it's possible yes, but improbable given the circumstances. (strawman argument in essence?)
...you then humbly imply that I shouldn't over theorize.
You simply mean to say that we'd get along better if I had the same ideas and experience as you? (The porridge is juuuust right 
)
So far it would appear that I don't - but lets not let that stop us from learning right?
To me more specific:
You suggest that lines supplying PWM should start floating when I power up a unit that they are supplying? That's not something I have the conceptual background to appreciate. Elaboration, if possible ?
Also RC circuit theory isn't exactly egghead territory - (obviously) I'm no expert - but I do understand you can't comprehend them without understanding the (basic) nature of resistance.