My suspicion is that Rick will appear in TtA 63


He doesn't, this is just a one-off "hey Cap, my old friend is in trouble, I'll go help him out" guest appearance.
Which yeah, makes him appear quite the $!@%*@%, telling Banner how bad he feels about abandoning him, then running back to Cap the first chance he gets. The letter pages were bringing this up at the time, too, check them out here.

Out yonder, under the shining vault, among men the saying goes: 'Man, be thyself!'
At home here with us, 'mid the tribe of the trolls, the saying goes: 'Troll, to thyself be-enough!'