jeep cherokee 4wd not disengaging properly

I had to install the temporary spare tire [ donut] on the right rear & drove about a half mile in 4wd. when i disengaged 4wd it felt as if the front wheels were still engaged. i shifted into reverse & backed up & this unlocked the front wheels. after repairing the tire & installing i engaged 4wd & noticed a whining sound coming from the front end, after disengaging 4wd i had to shift into reverse & backup to unlock the front wheels again. did driving in4wd with the temp tire do damage to the transfercase / front auto locking hubs. this a 2001 jeep cherokee with 124500 miles & 4.0 6 cylinder engine