I think his Dr is transitioning your husband from FOXFOX to maintenance chemo. Generally they like to keep you on FOLFOX for 6 months and then a break if possible. If he does not need additional infusions of oxiplatin and leucovoran, why add it? I think what they will be looking for is possible growth in tumor size or new ones, at which point they would probably put him back on FOLFOX. Thus the word "stable" is always good news on maintenance.
Hope this helps,
rectal cancer - April 2004
46 yrs old at diagnoses
stage III C - 6/13 lymph positive
radiation - 6 weeks
surgery - August 2004/hernia repair 2014
chemo - FOLFOX
NED - 10 years and counting!