surely "freezing him out" was doing something?
I dont know how things work at your place, but if I have a personal problem with how my job is going, it's not for the manager to ask me what my problems are. its for me to speak to the manager to get them sorted, otherwise the manager will simply assume that everything is hunky dorey. remember rumours float around all the time so managers will ignore things being said in the media etc. (otherwise they would have players in the office all the time)
you also cant just ship out a player, a player can refuse to go out on loan (and Collins did exactly that, and was quoted as so in the Sheffield Star at the time) so despite probably wanting him out Collins basically stole a wage for months before finally going out on loan
as many have said Clough will have told Collins a few home truths (remember he hasnt taken out a full page spread in the star announcing those home truths) but having conceded 17 goals in 13 games I can bet they were on the lines of him not doing his job... the likely hood (bearing in mind what we have seen of Collins blasting other player for his own failings) he refused to take any blame and instead looked to shift it. you can only help a player who wants to be helped, if you point blank refuse to acknowldge a failing on your own behalf then you cannot be helped....
I also suspect Collins didnt like what he heard and decided to tell Clough what he really thought... (again the Employee/Manager things come into question and if you had bollocked your own manager would you still be in a job....)
the problem is whatever happened Clough has now gone Collins is still shit, but because those who didnt like clough would argue we played in blue and white if Clough said we played in red and white... Collins is now seen as some type of messiah and free from blame which is nonesense... (many people criticised Clough for being tough on the rules... however you cant have it both ways) in truth had clough backed down he would have been seen as weak in the eyes of people like Collins and you dont take orders from a weak manager... (so catch 22)