First thread/post and first problem with my 5800xm (21.0.025 hacked)

I recently installed Animated Sms app. and now i have trouble to uninstall it
Uninstall process starts and soon quits with "unable to delete file" error

I assume that i need to manually shut down messaging process (or something like that) and then try to uninstall/delete files?

Animated SMS MTM (1.00 installed on phone memory 134kb)
and
Animated SMS - Skanob's Repack (1.02 installed on phone memory 3mb)

Those are the apps that i need to remove from my phone

Is there any way to do it without hard resetting/formatting phone?

Some app. like unlocker on win maybe? Or what files to delete manually via x-plore if it is possible to do it that way?

Thx in advance