impossible to re-pot it in new soil cause theres to many roots.it would most likely die. don't you think washing the foliage n leaching the soil for 3-4 weeks would remove any lethal pesticides?
because the plant is awesome its spherical n very bushy it was a deal for $9.99 i have it sitting above a tray so it don't re-absorb the water that drains from it.
i tried repotting a hibiscis half of it ended up dead, i removed most of the soil from a dwarf schefflera and split it into 2 plants one died and the other
one half of it died ,now theres not much left of it ,it will take a while for it to get bushy again.
i just remove some of the soil and add some fresh soil n pot in in a bigger pot and wait few weeks.