Respected devotees, pamho.
I am no great scholar, and my understanding of this debate comes down simply to the following verses spoken by The Lord Himself.
BG As it is: 15.16
dväv imau purusau loke
ksaras cäksara eva ca
ksarah sarväni bhütäni
küta-stho ’ksara ucyate
There are two classes of beings, the fallible and the infallible. In the material world every living entity is fallible, and in the spiritual world every living entity is called infallible.
BG As it is:8.21
avyakto ’ksara ity uktas
tam ähuh paramäm gatim
yam präpya na nivartante
tad dhäma paramam mama
That which the Vedäntists describe as unmanifest and infallible, that which is known as the supreme destination, that place from which, having attained it, one never returns—that is My supreme abode.
In my innocence, I once asked my Bhagavad Gita teacher a question regarding the infallible nature of the jivas in the spiritual world. He told me we became envious of Krsna and thus ended up here. Last time I checked, envy was definitely a fallible quality to which all jivas in the material world are prone.
I don't know about my teacher, but I'm going with Krsna on this one.