Yes... I made you a feature request for what you're really asking for, not a hold on this update, but locking the relay browser when a script is running, much as the adventure tab and other client options are locked when a script is in use.
Anyways, here's a log of the code switching outfits to buy nasal spray and failing to switch back to the backup after... This is a part of Wossname.ash, but it's using retrieve_item for the item collection... You can see that it fails to the Backup outfit after, possibly because it fails to purchase the pink candy hearts.
Step 5: Our Lady of Perpetual Indecision sidequest
Searching for "knob goblin nasal spray"...
Putting on Knob Goblin Elite Guard Uniform...
Equipment changed.
Purchasing Knob Goblin nasal spray (12 @ 150)...
You acquire Knob Goblin nasal spray (12)
You spent 1,800 Meat
Purchases complete.
Using 12 Knob Goblin nasal spray...
You acquire an effect: Wasabi Sinuses (duration: 120 Adventures)
Finished using 12 Knob Goblin nasal spray.
You need 9 more pink candy heart to continue.
Mood swing complete.
Putting on Swashbuckling Getup...
Equipment changed.
Putting on Frat Warrior Fatigues...