Bootcamp Partition is broken after resize

Hi everyone, while I have read threads from people with a similar problem, I believe this is a special case.

My setup:
MacBook Pro 5,3 (mid 2009)
Mavericks, Bootcamp 5

1 SSD with OS X and other mac stuff in hard disk bay
1 HDD in optical drive bay with two partitions, one MacExtended (with just my precious data) and one NTFS as Bootcamp partition with Windows 7 Professional.

(Therefor no internal DVD drive + my external DVD drive is broken)

Here's what I did:

I shrinked the MacEx partition of my HDD by using Disk Utility,

started Windows and used MiniTool Partition Wizard to expand the NTFS partition,

had to reboot windows to do the partitioning process,

it rebooted windows again, I got an error booting.

This is the error I get when I try to boot into Windows:

(First something along the lines "Failed to boot, repair your partition inserting your Windows 7 DVD..blahblah")

File: \boot\BCD

Status: 0xc0000225

Info: An error ocurred while attempting to read the boot configuration data.

Normally I would do exactly what it say's on the screen and recover using the DVD. But as you know by now, I don't have a DVD drive at all.

Because it was a PITA to install it, simply reinstalling Windows is my last option (Older MacBooks like mine won't boot a USB-stick or external drive with Windows, so I had to get all whacky-hacky with an external HDD that I made into a Windows 7 installer in Paralells, then plugged it in internally so it would be recognised by the minimalistic Apple BIOS).

I've done quite a bit of research already but I am left uncertain:
Some sources suggest to install rEFIt and use it's partition tool to sync the ominous GPT/MBR hybrid thing.
Other Sources have destroyed their Mac partition tables by doing that. I'd like to avoid destruction.

But maybe this hard drive armageddon only applies to systems with just one shared hard disk? (Here's hoping)

Any suggestions are very welcome.