Snape rattled out Remus' condition just because he could not receive the Order of Merlin. He potentially wanted Remus to lose his job which was the last option for him as he will not be able to get another job due to his condition. All he could think about was himself. Even though he made the portion for Remus, this was excessive. He already wanted the job so he thought that by making Remus, who found it difficult to secure a well paying job, to resign just so he could teach his favourite subject even though he had a well paying job. He wanted take revenge for not getting the order of Merlin by making Remus unemployed. He really is the bravest man I ever knew hahahah!! Snape is a toxic person pining over his high school crush who he called a 'mudblood' in the first place.